Factory Service Index - Packard Motor Car Information

An Index to Service Information for 1955-56 (55th->56th Series) Packards

1955-56 (55th->56th Series) - ENGINE

MAIN SERVICE INDEX -> 1955-56 (55TH->56TH SERIES) -> ENGINE

Subject	Application	Document
Combustion Test With Dual Exhaust preferred pickup connection point	55th	SC Vol. 29, No. 3, p. 22
Crankshaft Front Oil Seals leaking - new type	55th-56th	SC Vol. 30, No. 3, p. 12
Crankshaft Identification balance/usage	55th	SC Vol. 29, No. 5, p. 30
Crankshaft Identification correction	55th	SC Vol. 29, No. 8, p. 41
Crankshafts, Replacement superseded part - drop-forged	5560-80; 56th	SSB No. 350, p. 7
Cylinder and Piston Assembly installation with standard transmission	55th	SC Vol. 29, No. 8, p. 42
Cylinder Head Oil Passage noisy rockers levers - restricted	55th	STB 55T-5 (Zones only)
Cylinder Heads, Cast Dome production change - new specifications and adjustments and identification	5540	SC Vol. 29, No. 7, p. 35
Detonation - Supplement revised distributor mainshaft assembly	5680	STB 56T-17, Dealer 14
Detonation Auto-Lite distributor conversion kits	5640-60-70	STB 56T-19, Dealer 16
Detonation insufficient octane - production change, Delco distributor conversion kits	56th	STB 56T-14, Dealer 11
Engine and Parts - Service Bulletin Correction see SSB No. 350, p. 6 - engine/part numbers	22nd-54th; 55th-56th	SSB No. 351, p. 3
Engine and Parts - V8 Engines 1955 320-cid stripped engines - will fit 1956	55th-56th	SSB No. 350, p. 7
Engine Numbers Utica number location - changes, identification	55th	SC Vol. 29, No. 5, p. 29
Engine, Service wrong colors, valve covers - casting numbers, identification	55th	STB 55T-33, Dealer 24
Hydraulic Tappet Leak-Down noise after cold start - redesigned	55th	STB 55T-29 (Zones only)
Hydraulic Tappet Noise low gallery oil pressure, hot - camshaft thrust plate/spacer, main bearing clearnace	55th	SC Vol. 30, No. 1, p. 3
Hydraulic Tappets - General Information clicking/noisy - diagnosis, cleaning, testing	55th-56th	SC Vol. 30, No. 8, p. 31
Hydraulic Tappets, Noisy idle or 40-50MPH, hot - oil aeration, sticking relief valve	56th	SC Vol. 30, No. 3, p. 11
Hydraulic Valve Lifter Checking Tool new special tool - adapting old tool	55th-56th	SC Vol. 30, No. 2, p. 6
Hydraulic Valve Lifters superseded part	55th-56th; 56J	SSB No. 344, p. 2
Hydraulic Valve Tappet Letdown, Oil Pump Relief Valve Tube Kit for Correction of intermittent at idle, 40-60MPH, hot - revised pump/sump tube, pressure checks/corrections reiterated	55th-56th	STB 56T-20, Dealer 17
Ignition Timing first production - octane issues	5680-88	SC Vol. 29, No. 12, p. 65
Ignition Timing, Incorrect excessive vacuum - inspection and adjustment	5540	STB 55T-39, Dealer 30
Oil Consumption - see also: Piston Rings Rocker Lever Shaft Holes Valve Spring Baffles	--	--
Oil Consumption excessive - rocker levers shafts, intake valve deflectors, and piston rings	55th	STB 55T-19, Dealer 16
Oil Drain Plug Gasket new nylon type	22nd-56th	SC Vol. 30, No. 1, p. 4
Oil Filler Tube Baffle oil splash - redesigned tube	55th	SC Vol. 29, No. 7, p. 38
Piston Pin Lock groove and wire size change	55th	SC Vol. 29, No. 8, p. 40
Piston Pin Locks supplemental usage	56th	SC Vol. 29, No. 12, p. 65
Piston Rings, Chrome excessive oil consumption - improper installation	55th-56th	SC Vol. 30, No. 2, p. 7
Rear Main Bearing Oil Leaks notching for drainage	55th	SC Vol. 29, No. 4, p. 26
Rocker Lever Identification right vs. left hand	55th	SC Vol. 29, No. 5, p. 28
Rocker Lever Shaft Holes - New Shafts noisy - holes reinstated, smaller	55th	STB 55T-35, Dealer 26
Rocker Lever Shaft Holes - Oil Control oil consumption - holes eliminated	55th	STB 55T-16, Dealer 14
Rocker Levers superseded parts - instructions for return/exchange of stock	55th-56th	P&A Letter to Dealers, Mar. 14, 1956
Rough Engines reporting balancing numbers	55th	STB 55T-23 (Zones only)
Rough Idle - Carter 4-Barrel secondary return spring tension	5660	SC Vol. 29, No. 12, p. 65
Runaway/Flare - see: TWIN ULTRAMATIC	--	--
Service Manual Corrections - Engine Section bore/stroke specifications	55th	SC Vol. 29, No. 8, p. 41
Stall On Left Turns - Carter 4-Barrel internal leak - vacuum passage bushing	5660	SC Vol. 30, No. 9, p. 36
Valve Spring Baffles (Part Number - Correction) rocker shaft bolt lockwasher	55th-56th	SC Vol. 30, No. 5, p. 20
Valve Spring Baffles oil consumption - new part	55th-56th	SC Vol. 30, No. 1, p. 1
Valve Spring Retainers spring seats - new harder type	55th-56th; 56J	SSB No. 325, p. 1
Valve Spring Seat, Intake retainer - new harder type	56th	SC Vol. 30, No. 7, p. 26
Valve Spring Tool new special tool - in-car removal	55th	SC Vol. 29, No. 5, p. 28

SC = Service Counselor

SL = Service Letter

STB = Service Technical Bulletin

SSB = Studebaker Service Bulletin

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Though previously published elsewhere, this work is provided with my full permission for display on the PackardInfo.com website and the personal use of visitors to that site. Any other unauthorized use, however, is expressly prohibited and may be subject to prosecution. Also, because this index was compiled from documents published by the factory, neither the author nor PackardInfo.com are responsible for errors in content arising from source information.

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