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An Index to Service Information for 1937-42 (15th->20th Series) Packards

1937-42 (15th->20th Series) - ENGINE

SubjectApplicationDocument
Bearing Clearance, Main and Rod
noise, vibrations - identification, measurement
(not specified)
Bearing Replacements, Connecting Rod
unnecessary replacement - limitation order, guidelines
(not specified)
Bearing Sets, Main
now available - cost-savings
120-138CD;
115C;
1600-1-2;
1700-1-2
Bearing Shells, Connecting Rod
new larger bearings/rods - machine older rods to fit
120-138CD;
115C;
1600-1;
1700-1-1A
Bearing Shells, Main and Connecting Rod - Lead Base Babbitt
wartime shortage, tin discontinued - characteristic appearance
20th
Bearing Shells, Note on
rod/main bright or dull - no effect
(not specified)
Bearings Measured Quickly, Rod and Main
new Plastigage Kit - proper use
(not specified)
Bearings, Connecting Rod - Service Letter Correction
new larger bearings/rods - not interchangeable, identification
1700-1-1A
Bearings, Connecting Rod
new larger bearings/rods - not interchangeable, identification
1700-1-1A
Bearings, Connecting Rod
rod no longer supplied, use 17th Series - identification, precautions
120C-138CD;
115C;
1600-1-1A
Bearings, Connecting Rod
Super Eight production change - less running clearance
1603-4-5
Bearings, Crankshaft .020 - Parts Men Note
after grinding - parts reference
1703-3A-5
Bearings, Undersize Crankshaft
material shortage - crankshaft regrinding
(not specified)
Camshaft and Valve Springs
cast-iron/steel, engine suffix identification - corresponding oil pump gear
1600-1-2
Camshaft Valve Holder, Motor
new special tools - required
(NOTE: page missing from archived document)
1600-1
Camshaft, Carburetor and
production profile change - new carburetor required
1803-3A-4-5-6-7-8
Carbon Rattle
piston carbon deposits striking head - use of additional head gasket
(not specified)
Connecting Rod and Cap Assembly
assembly orientation - crankshaft position
120C-138CD;
115C;
1600-1-1A-1D;
1700-1-1A-2;
18th-20th
Connecting Rod Bolt Palnut
cotter pins eliminated - new nut locks, proper tightening
1700-1-2
Connecting Rod Bolts - Palnuts
eliminates cotter pins, not reusable - proper installation, new tool
1700-1-2
Connecting Rod Burnisher Change
rod bushing, production change - tool modification required
1700-1
Connecting Rod Lock Nut Wrench
new special tool - new style Pal nuts
1700-1
Crankshaft Journal Sizes
bearing selection - exact dimensions
18th-21st
Cylinder and Piston Assemblies Available
short block less crankshaft - back in stock
1203-4-5;
1403-4-5;
120-138CD;
115C;
1600-1-1A-1D-2;
1700-1-1A-2;
18th-21st
Cylinder and Piston Assembly - Parts Book Correction
part number
1901-1A
Cylinder Blocks, Super Eight
use of 16th Series - drilling valve compartment drains, additional parts
15th
Cylinder Bore and Piston Diameter Marking Chart
identification - location
(NOTE: page missing from archived document)
16th
Cylinder Head Combinations, Distributor and
additional advance, requires different head - part reference
1800
Cylinder Head Corrosion
aluminum - checks, maintenance, precautions
12th-14th;
120-138CD;
115C;
15th-16th;
1707-8
Cylinder Head Gasket Seal
precoated - part reference
7th-14th;
120-138CD;
115C;
15th-16th;
1700-1-2-3-5
Cylinder Head Gaskets
overheating - water passage blocked by sealing film
(not specified)
Cylinder Head Gaskets
wartime shortage - re-use, precautions
(all models)
Cylinder Head Identification
casting numbers - high/low compression
16th
Cylinder Head Lifter Tool
weight/length, bonnet design - new special tool required
19th
Cylinder Head Nuts, Tighten
head failures/leaks, oil consumption - proper replacement, torque-tightening
(all models)
Cylinder Head Nuts, Tightening
oil consumption, poor economy/performance, cracked heads - tensioning wrench, procedure
(all models)
Cylinder Head Studs
oversize threads, water jacket seal - identification, sealing paste
All Models
Cylinder Head Tension Wrench
proper tightening reiterated - alternate special tools
(all models)
Cylinder Head, Mounting Electromatic Clutch on New
support holes not drilled - layout, specifications
1901
Cylinder Heads
new cast-iron, supersedes aluminum - redrilling not required
1200-1-2;
1400-1-2;
1500-1-2;
1603-4-5
Cylinder Heads
return to cast-iron, gasket usage - replaces aluminum heads, drill new water passages
120-138CD;
1601-1A-2-3-4-5;
1701-1A-2-3-3A-5
Cylinder Heads on Super Eight, Aluminum
corrosion/leaks - inspection service
1500-1-2; 1603-4-5
Cylinder Heads, Ordering
high compression, superseded part - flange and other details required
120C-138CD;
1601-2;
1701-2
Cylinder Heads, Return Bolts Shipped with
bundled for shipping - steel shortage
(all models)
Cylinder Repairs
small holes/cracks - repair compounds
(all models)
Cylinders and Valves, Rusted
moving stored vehicles - preparations for starting
(all models)
Detonation, What to do About
carbon formation, fuel octane - checks and adjustments, cleaning
(all models)
Engine and Adapter Kit, Six Cylinder Replacement
now in-stock for Electromatic and prior to 19th - new crankcase ventilator kits
115C;
1600; 1700; 1800; 1900;
2000-10-20-30;
2100-30
Engine Replacement (U-Joint)
Henney models - new shorter, front drive shaft available
1701A;
1801A;
1901A;
2001A
Engine Replacement, Six Cylinder - Correction
standard passenger cars - engine part number
115C;
1600; 1700; 1800; 1900;
2000-10-20;
2100
Engine Replacement, Six Cylinder
new improved design services all models - alterations required
115C;
1600; 1700; 1800; 1900;
2000-10-20-30;
2100-30
Engine Stand and Dolly
new tools - six/eight-cylinder
(not specified)
Engine Stand Price
supplier increase
(not specified)
Engine, Prelubricate Replacement
oiling cylinder walls - break-in
(all models)
Flat Rate Manual 1941-49, Changes and Corrections in
select operations
19th-23rd
Flywheel Housing Covers
cast design replaces stamped steel
120-138CD;
115C;
1600-1-1A-1D-2;
1700-1-1A-2;
1800-1-1A;
1900-1-1A;
1951;
2000-01-11-10-20-21-30;
2100-01-11-30
Hydraulic Tappet Checking Tool
cleaning, testing - new tool
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8;
2003-04-05-06-07-08-23-30-55;
2103-06-26;
2206-13-26-33;
2306-13-33
Hydraulic Tappets - Super Eight
operation, diagnosis, service - new high-volume oil pump
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8;
2003-04-05-06-07-08-23-30-55;
2103-06-26
Hydraulic Tappets
new, automatically adjusted - removal/handling, troubleshooting noise
1803-3A-4-5-6-7-8
Hydraulic Valve Lifter Tester
checking leak-down - new tool
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8;
2003-04-05-06-07-08-23-30-55;
2103-06-26;
2206-13-26-33;
(2306-13-33)
Hydraulic Valve Tappets - Super Eight
noisy, low oil pressure at idle - plumbing change, verify filter restrictor
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8
Manifold Gasket Failures
chafing - chamfer manifold edges
(all models)
Manifold Gasket Leakage
mating surface inspection - realignment procedure
18th
Manifold Gasket Leaks, Intake
rough idle - improper tightening, detection
(all models)
Manifold Gasket Sets
now available
17th
Manifold Gaskets, Exhaust
order in sets only - superseded parts
120-138CD;
1601-1-1A-1D;
1701-1A;
1801-1A;
1803-3A-4-5-6-7-8
Manifold Removal, Exhaust
difficulty - proper procedure
1803-3A-4-5-6-7-8
Manifold Swivel Socket Wrench, Inlet and Exhaust
new special tool - water jacket rear drain plug
1701-2
Manifold, Intake and Exhaust
no joint gasket - use gasket paste
1700-1-2
Motor Period
torsional disturbance - clutch/transmission jazz
(not specified)
Motor Snubber Links, Loose
washer omitted/incorrect - parts needed, installation
1700-1-3
Motors in Cars in Storage, Lubrication of
new vehicles - rust inhibitor
20th
Oil Consumption
sustained high speeds, rear vent tube - valve cover plates with baffles
1600-1
Oil Consumption, Fuel Pump May Cause High
rough idle - fractured booster diaphragm
(not specified)
Oil Filler Pipe, Motor
sticky valves - new longer design, improved crankcase ventilation
19th
Oil Filter - Super Eight
noisy lifters - special filter, blow-off valve
1803-3A-4-5-6-7-8
Oil Filter Cartridge - Change Period Revised
high-detergents oils - reduced
120-138CD;
115C;
16th?-54th
Oil Filter Cartridge Change Period Revised
high detergent oil - reduced interval
120-138CD;
115C;
16th?-54th
Oil Filter Connections, Purolator
loose bracket - leaky unions, pipe failure
(not specified)
Oil Filter Installation, Purolator (What is Wrong with This Picture)
wrong tube/cap - crankcase ventilation, vehicle storage
19th
Oil Filter Leaks
case cover gasket shrinkage - check tightness, do not reuse
18th
Oil Filter Tubes
leaking - new tube (Six), new tube/elbow (Super Eight)
1800;
1803-3A-4-5-6-7-8
Oil Filter, Super Eight - Correction
incorrect part number
1803-3A-4-5-6-7-8
Oil Filter: Purolator Filter Facts
micronic filtration, pleated paper - benefits, replacement period
(NOTE: page missing from archived document)
(not specified)
Oil For Sub-Zero Operation, Winter Engine
new 5-W oil - issues, limited availability/use
(all models)
STB 49T-40 (Zones only)
Oil Leaks, Front Cover
excessive oil consumption - checks/corrections/precautions
(not specified)
Oil Pan Gasket Sets
replace RH-LH, together - available in sets
120-138CD;
115C;
1600-1-1A-1D-2;
1700-1-1A-2;
18th-22nd;
(23rd54th)
Oil Pan, Motor
standard pan shortage - Clipper pan retrofit, indicator calibration
120-138CD;
1601-2;
1701-2;
1801-1A;
1901-1A
Oil Pan, New
pan, indicator, strainer bracket - new design, not interchangeable
1900-1-1A
Oil Pressure, Low - Correction
part numbers
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8;
2003-04-05-06-07-08-23-30-55;
2103-06-26
Oil Pressure, Low
idling, worn/sticking regulator valve - new spring-loaded type
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8;
2003-04-05-06-07-08-23-30-55;
2103-06-26
Oil Pressure, Low
pan sludge, clogged pickup - cleaning procedure
(not specified)
Oil Pump - Twelve
noisy valvetrain at start-up - metering valve sticking
?1005-6;
?1106-7-8;
?1207-8;
?1406-7-8;
?1506-7-8;
?1607-8;
1707-8
Oil Pump Body Cover - Now Available
had been difficult to procure
?1100-1-2-3-4-5;
1200-1-2-3-4-5;
1400-1-2-3-4-5;
1500-1-2;
1603-4-5;
1703-3A-5
Oil Pump Camshaft Gear
sheared drive gear pin, rust - use of thicker drive spring
120-138CD;
115C;
1600-1;
1700-1-2;
18th-20th
Oil Pump Cover Kit, Motor
Super Eight - new repair kit available
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8;
2003-04-05-07-08-23-55
Oil Pump, New Super Eight
increased flow and pressure - worn pump or opening up of bearing clearances
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8;
2003-04-05-06-07-08-23-30-55;
2103-06-26
Oil Seal, Crankshaft Rear - Correction
Master Part List application/number- molded rubber type
1803-3A-4-5-6-7-8
Oil Seal, Gear Cover
burned, leaking - graphite grease
120-138CD;
115C;
16th-54th
Oil Seal, Rear Bearing
new -all composition type - service installation, rear oil pan copper washers
1803-3A-4-5-6-7-8
Oil Seal, Rear Main Bearing
leaks - preventative measures
120-138CD;
115C;
16th-18th (exc. 1703-3A-5);
1951;
2000-01-03-06-10-11;
21st;
22nd-24th;
(25th-54th)
Oil Seal, Rear Main Bearing
leaks - undersize
120-138CD;
115C;
16th-18th (exc. 1703-3A-5);
1951;
2000-01-03-06-10-11;
21st;
22nd-54th
Oil Seal, Rear Main Bearing
leaks, bearing distortion - new cork type, installation
120-138CD;
115C;
16th-18th (exc. 1703-3A-5);
1951;
2000-01-03-06-10-11;
21st;
22nd-54th
Oil, Rust Inhibiting
motors in storage - limited availability, alternate sourcing
20th
Piston - Standard Sizes and Adjustments Changes
skirt clearance - range reduced
2000-01-10-11-20-21-30
Piston and Rings, Replacement
latest type used for earlier models - check replacement chart for rings only
9th-14th;
120-138CD;
115C;
15th-20th
Piston Oversize Diameters
revised specification, skirt clearance reduced - size reference
?1st-14th;
120-138CD;
115C;
15th-16th
Piston Oversize Diameters
revised specification, variation reduced - size reference
?1st-14th;
120-138CD;
115C;
15th-17th
Piston Pin Bushings
two-piece, split-type - oil groove, burnishing procedure
120-138CD;
115C;
1600-1-1A-1D-2-3-4-5;
1700-1-1A-2-3-3A-5;
18th-20th
Piston Ring Sets
Perfect Circle - ordering
(all models)
Piston Rings
clarification of pistons/rings used in production - aluminum/cast-iron, specifications
20th
Piston Rings
Perfect Circle 200 top ring - identification, proper installation
18th
Piston Rings and Expanders
ample supply for spring season repairs
(not specified)
Piston Rings, Carbonized
oil consumption, low speed, cold weather - oil changes, cleaning procedure
(all models)
Piston Rings, Selling and Installing Perfect Circle
ring groove combinations - use of selection chart
9th-14th;
120-138CD;
115C;
15th-20th
Pistons
cast iron to replace aluminum in production - specifications correction
20th
Pistons and Piston Rings - Super Eight
new Thermo-strut pistons, special-alloy rings - retrofit, precautions
1501-2-3;
1603-4-5;
1703-5
Pistons, Cast Iron
engine suffix C or higher - skirt clearance, installation
20th
Pistons, Oversize Marking on
formerly paint, now stamped - prior chart obsolete
120C-138CD;
115C;
15th
Power, L-Head vs. Valve-In-Head
higher torque/HP - detonation
(all models)
Roar, Engine
highway speeds, air cleaner - new brace grommet, use of Super Eight heater tube support
1800
Roughness, Engine
engine snubber adjustment - neutralizing
18th
(exc. Econo-Drive)
Shop Manual Correction, 1937
tappet settings - valve timing, Super Eight
1500-1-2
Shop Manual Corrections (1938-1939)
crankcase oil capacity
1600; 1700
Shop Manual Corrections (1938-1939)
valve tappet settings - Super Eight
1603-4-5;
1703-3A-5
Sludge, Crankcase
driving speed reductions, condensation, bearing trouble - operating temperatures, oil changes
(all models)
Sludge, Engine
cleaning oil pan/screen - engine flushing
(all models)
Stud Remover and Driver
new special tool - cylinder head studs
(all models)
Tappet Hole Reamer, Valve
new special tools - required
(NOTE: page missing from archived document)
1600-3
Tappets, Hydraulic
Super Eight, oil supply - special oil filter, inspection. cleaning
1803-3A-4-5-6-7-8
Tappets, Noisy (Super Eight) - see also:
Hydraulic Tappets
Oil Filter
Oil Pressure
Oil Pump
--
--
Tappets, Noisy - Super Eight
low oil pressure - close/redrill filter elbow
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8
Tappets, Noisy - Super Eight
low oil pressure at idle - 20th Series piping, retrofit
1803-3A-4-5-6-7-8;
1903-3A-4-5-6-7-8
Tappets, Valve - Special Tools
new required tools - hole reamer, adjusting wrench
18th
Tappets, Valve
excessive replacement - service parts reiterated, superseded assembly
1803-3A-4-5-6-7-8
Tappets, Valve
Six/Eight - self-locking screw - Super Eight plunger/tappet replacement
18th
Valve Lifter Mechanism - Super Eight
noisy lifters - clogged filter, lifter test
1803-3A-4-5-6-7-8
Valve Lifter Mechanism - Super Eight
supplied by oil filter - use OE filter only
1803-3A-4-5-6-7-8
Valve Seats, Checking
run-out, uneven wear - use of dial indicator
(all models)
Valve Spring Load
reduced by cutting seats - shimming, precautions
(not specified)
Valve Springs, Camshaft and
cast-iron/steel, engine suffix identification - corresponding oil pump gear
1600-1-2
Valve Springs, Weak
sticking valves - shimming
(not specified)
Valve Timing
specifications reference
900-1-2-3-4;
10th-14th (exc. Twelves);
120-138CD;
115C;
15th-19th;
2000-1-3-3A-4-5-6-7-8-20-21-23
Valve Tools
new required tools - hand grinder, suction cup
18th
Valve Wrench - Tool Suggestion
improvement - stops slipping
(not specified)
Valves and Car Storage, Sticky
running motors, internal rust - cylinder oiling, battery removal/charging
(all models)
Valves, Rusted Cylinders and
moving stored vehicles - preparations for starting
(all models)
Valves, Sticking
carbon, gum, rust, mechanical causes/remedies
(all models)
Valves, Sticking
production change, field retrofit - valve cut-off/counterbore, valve covers with oil baffles
1600-1
Valves, Sticking
production change, field retrofit reiterated - new counterboring tool
1600-1
Valves, Sticking
vehicles in storage - precautions reiterated
(all models)
Valves, Sticky
cold starts/stops, rust in guides - new corrosion-resistant material
(all models)
Valves, Sticky
exhaust valves, rust - proper storage
(all models)
Valves, Sticky
valve guide rust - new filler, cap and duct increase crankcase ventilation, check for gum/varnish/carbon
19th
Valves, Sticky
valves/guides - valve spring tension
(all models)
Vibration Damper Assembly Kit
superseded - modifications
1900-1-1A; 1951;
2000-01-11;
2100-01-11-30;
2200-11-02-20- 22-33-40;
2302-22-33
Vibration Damper Wrench
new special tools - required
(NOTE: page missing from archived document)
120-120B;
115C
1600-1
Warm Weather Service
engine/cooling system - inspection/maintenance
(all models)
Wrist Pins, Loose
low mileage, bushing black/corroded - insufficient oil changes
(not specified)

SC = Service Counselor
SL = Service Letter
STB = Service Technical Bulletin
SSB = Studebaker Service Bulletin

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