[Vwdiesel] More Quantum Questions? Injection Pump

[LBaird119 at aol.com]

In a message dated 3/14/2009 9:27:51 PM Pacific Daylight Time, 
toensing at wildblue.net writes:

> I would also be interested in buying a good used IP for my '82 Quantum TD 
> if it doesn't leak &is reasonably priced. Let me know what you have. I notice 
> my Quantum's IP has "something" on top that connects to the intake manifold 
> to compensate for the turbo boost. Again, what turbo diesel IPs are 
> interchangeable without modification? I understand older non-turbo IPs will work but I 
> prefer one set up for my car which does not require modification.
> 

  You'd be better off spending the money on rebuilding your own 
pump rather than buying another USED pump which WILL start 
leaking on you and may or may not be as good, maybe even better 
but it WILL leak sooner or later.  A rebuilt pump is essentiall new 
and won't leak for a long time (unless they reformulate the fuel 
again in which case they'll all leak!)
  Turn your engine until you can see both #1 cylinder (closest to the 
timing belt) cam lobes are pointing up/out.  You can pull the valve 
cover or most likely just look through the oil filler hole.  Turn the 
crank to the zero mark on the flywheel.  Use a mirror or such and 
see if your pump pin hole in the gear lines up with the hole behind 
it.  Sometimes just sliding a pin in there doesn't tell you unless you 
rotate it back and forth to make sure.  Rotate it as needed to be 
sure the hole (outboard side one) lines up with the hole in the 
bracket.  If it and the crank TDC mark don't jive then you are off 
and need to adjust the belt cog on the pump most likely.  Once 
you are on the right cog tooth, then you install your timing gauge. 
Preload it to whatever you want, just be sure there's enough room 
to back up and go forward more than 1mm or you have to start 
over sort of (just with the gauge).  Just for curiousity, turn the 
face to zero the gauge, back the engine up about 30 to 50 
degrees and the dial should stop moving.  See what you were 
set at.  Zero the gauge, turn the engine forward to TDC and 
be sure you look straight on at it to set it.  Now recheck your 
dial.  Be sure you had the cold start knob in, check the back of 
the pump and see that the lever there is fully seated against its 
stop. If not then loosen the lock screw and adjust the cable as 
needed BEFORE you proceed turning the engine back to TDC.
(sorry I type as I go!)
  Loosen the 3 pump bolts and 1 nut and adjust the pump timing 
to about 1.00mm.  A tad more won't hurt, just don't do less 
ideally.  Lock down a front and the one rear bolt on the pump.  
Rotate the engine back again until the dial stops moving, check 
zero, rotate back to dead on TDC, check timing.  If it's good then 
you're done, if not, readjust and recheck until it's right.  
  It should start unless something's mucked up and it really shouldn't 
be.
    Loren


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