Re: 544DEISEL STARTING WOES AGAIN

Posted by JB2 on November 15, 2005 at 18:47:05 from (72.56.121.128):

In Reply to: 544DEISEL STARTING WOES AGAIN posted by dave from MN on November 15, 2005 at 04:34:35:

Hi Dave, from I&T service manual for 544:
Shut-off Plunger Adjustment. The shut off plunger figure 106 provides an excess fuel starting position for the shut-off control lever on the injection pump. To adjust the shut-off plunger, operate the engine at approximately 900 RPM. Disconnect the shut-off cable, loosen jam nut on the shut-off plunger and back the plunger unit out several turns. Move the shut-off lever rearward until engine speed increases. Hold lever in this position, turn plunger in until end of plunger just contacts the lever, then tighten the jam nut. Move lever fully rearward to depress the plunger in. Engine must shut-off at this position. Connect shut-off cable to control lever.

Are you positive your injection pump timing is correct? One quick test is when engine is warm it should start in less than 1 rev of the crank shaft. If it kicks back on the starter then timing is to fast and if it requires several revs to start and engine is in good shape it is possible injectin pump timing is to slow.

My brother has a 684 with D239 and with 5W30 oil and a good battery, shut-off control lever on start position and a small shot of ether it will start to 0F and anything below requires a recirculating heater. He also has a 495 which has a D179 engine but it has a thermal heater in the manifold that also heats the fuel into the injection pump and it will start to -20F without being plugged in.

Hope this helps
JB2

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