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Figure 28
1. Charge pump cap
1.
Stop the engine and wait for all moving parts to
stop. Raise the rear of the machine up onto jack
stands high enough to raise the drive wheels
off the ground.
2.
Check oil level. Refer to
Oil Level (page
35).
3.
Start the engine and move throttle control ahead
to full throttle position. Move the motion control
levers inward (together) and move both levers
forward with equal pressure.
If either drive wheel does not rotate, it is possible
to assist the purging of the charge pump by
carefully rotating the tire in the forward position.
Note:
It is necessary to lightly touch the charge
pump cap with your hand to check the pump
temperature. If the cap is too hot to touch, turn
off the engine. The pumps may be damaged if
the pump becomes too hot.
If either drive wheel still does not rotate continue
with step .
4.
Thoroughly clean the area around each of the
charge pump housings.
5.
To "prime" charge pump, loosen two hex socket
head capscrews (shown in ) 1-1/2 turns only.
Make sure the engine is not running. Lift
the charge pump housing upward and wait for
a steady flow of oil to flow out from under the
housing. Retighten the capscrews. Do this for
both pumps.
Note:
The hydraulic reservoir can be
pressurized up to 5 psi to speed this process.
6.
If either drive wheel still does not rotate, stop
and repeat steps and above for the respective
pump. If wheels rotate slowly, the system may
prime after additional running. Check oil level
as stated in
Checking the Hydraulic Oil Level
(page 35)
section.
g012852
2. Loosen 1-1/2 turns only
Checking the Hydraulic
7.
Allow unit to run several minutes after the
charge pumps are "primed" with drive system in
the full speed position. Check oil level as stated
in
Checking the Hydraulic Oil Level (page 35)
section.
37
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