Re: 1950 Packard 288 Auto overheating HELP
Posted by HH56 On 2010/6/11 21:40:09
Only spec I find for a gap in front of impeller is for the prewar pump in the 38-42 shop manuals. A different design though and a fairly wide spec -- .012-.074.
Different part numbers, but believe the pump you have would be more similar to the 51-4's. That spec is at the rear of impeller and is .020-040. It's starting to sound like something weird is going to be the problem because clearances on the pump you have don't seem that bad.
Since you have the pump off, have you pulled the distribution tube and verified it didn't get crushed and the jacket around it is in good condition, and nothing foreign got in to block anywhere. Can you put a water hose in the block opening and have water come out the head without difficulty.
Attach file:
(47.00 KB)
Different part numbers, but believe the pump you have would be more similar to the 51-4's. That spec is at the rear of impeller and is .020-040. It's starting to sound like something weird is going to be the problem because clearances on the pump you have don't seem that bad.
Since you have the pump off, have you pulled the distribution tube and verified it didn't get crushed and the jacket around it is in good condition, and nothing foreign got in to block anywhere. Can you put a water hose in the block opening and have water come out the head without difficulty.
Attach file:
(47.00 KB)
This Post was from: https://packardinfo.com/xoops/html/modules/newbb/viewtopic.php?post_id=54460