[Healeys] Overdrive pump queries

[gradea1 at charter.net]

Simon- two things...did some of that "Plastic Metal" (JB Weld) that
you found, get into the plunger/pump body and "weld" it together? It
(plunger) must move up and down with the action of the cam on the
mainshaft to "pump" oil. (the wheel on the end should also be free to
rotate)
Secondly, the new 1/4" ball you fitted to the pump body opening-did
you smack it to seat with the body hole??...this is very important as
if it does not seal perfectly, you will get "0" pressure. 
Yes, you can engage/disengage the OD with the lever, sans the
solenoid. Hank

	-----------------------------------------From: "Michael Salter" 
To: "Simon Lachlan"
Cc: "Healeys"
Sent: Sunday August 29 2021 5:58:01AM
Subject: Re: [Healeys] Overdrive pump queries

 To your question in 3. No when you put a rod up through the hole in
the center of the pump body lower flange you will be pressing on the
end of the piston which will move up and down as the overdrive is
rotated. The spring merely holds the piston roller against the cam
until pressure is established.  If the piston does not move up and
down with no influence from that "rod" it is jamming in the body and
this must be corrected. 
 M  
 On Sun., Aug. 29, 2021, 8:46 a.m. Simon Lachlan via Healeys,  wrote:

	Hi, 

	My overdrive is still driving me mad…… 

	So, I’ve got it reassembled and have added the oil. About 3.5
litres was all it required so there must have been a fair bit still
inside. 

	* The solenoid is still in its box. Am I right in assuming(!)that one
can switch the OD on manually with the lever on the RHS??

	* I ran the engine in 3rd for about 2 minutes whilst bringing that
lever up, down, wherever. No pressure. How long does it take for the
OD to produce pressure after the hydraulics have been reassembled?

	* With the pump in place and its two retaining screws tightened up,
should one be able to move the pump’s piston up and down against the
spring with a rod pushed up through that bottom bolt? (The bolt into
which the filter’s bolt screws). Mine wouldn’t move at all. But
wouldn’t that depend on the position of the cam??

	* One observation: The piston in the AH Spares accumulator wouldn’t
move in/out with pressure from my thumb. The supplier, OD Spares, said
that it takes a lot of pressure and oil to get that piston moving. Any
thoughts on that??

	I suspect that I’ve not managed to line the top of the piston up
properly. Zero pressure. 

	I had pressure before this saga all started but it dropped
drastically once the engine/gearbox warmed up. Hence the new AH Spares
accumulator with bigger bore and new ball bearings and little springs
etcetc. 

	I don’t believe that I’ve got anything (else!) wrong so I’m
wondering about the pump…….. 

	Simon 

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