[Healeys] OD check ball

[gradea1 at charter.net]

Be careful here! There are two check ball valves and springs in the
OD. The upper operating valve ball is different than the pump valve.
Bob is correct on one size-but one is 5/16" but the other is 1/4"...if
you reverse them you won't get overdrive pressure. I have the part
numbers for each from the parts book, but that does not indicate the
sizes.
From the problem my friend had with no pressure at the pump valve, I'm
thinking the 1/4" belongs there and the 5/16" is in the upper
operating valve. He replaced the ball with the correct size and
pressure returned. I just assembled an overdrive for a 100, but don't
remember which is which-I did remember not to mix them up. Check the
bore size to be sure if you do mix them while assembling. I'll recheck
the Sept. 1954 parts book to see if a size is mentioned for each. Hank

	-----------------------------------------From: "Bob Spidell" 
To: healeys at autox.team.net
Cc: 
Sent: Thursday May 14 2020 8:48:13PM
Subject: Re: [Healeys] OD check ball

  I believe it's 5/16"; hopefully others can confirm. Same size as the
ball in the OD activating valve and the bearings in the seat slides; I
bought a bag of them for spares.

 Bob

 On 5/14/2020 4:52 PM, Warren wrote:

	Would anyone know the size of the ball bearing on the pump non return
valve and where I might get one  

	locally? Yes, I lost it as I was inspecting for dirt or wear. The
last thing I wanted to check and clean while I had access before I
started to reassemble with new accumulator,piston and spring. 

	Thanks, 

	WD 67 BJ8 

	Sent from Mail [1] for Windows 10 

 

Links:
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