Bleeding The Hydraulic System - Toro 74142TE Operator's Manual

Bleeding the Hydraulic System

1. Raise the rear of machine and support it with jack
stands (or equivalent support) just high enough to
allow the drive wheels to turn freely.
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Figure 75
1. Jacking points
2. Start the engine, move the throttle control ahead to the
1/2 throttle position, and disengage the parking brake.
A. Move the bypass levers into the pushing the
machine position. With the bypass valves
open and the engine running, slowly move the
motion-control levers in both forward and reverse
(5 or 6 times).
B. Move the bypass levers into the operating the
machine position.
C. With the bypass valve closed and the engine
running, slowly move the directional control in
both forward and reverse directions (5 to 6 times).
D. Stop the engine and check the oil level in the
expansion reservoir. Add the specified oil as until
it reaches the FULL COLD line on the expansion
reservoir.
3. Repeat step 2 until all the air is completely purged from
the system.
Note: When the transaxle operates at normal noise
levels, moves smoothly forward, and reverses at normal
speeds, it is purged.
4. Check the oil level in the expansion reservoir a final
time. Add the specified oil as until it reaches the FULL
COLD line on the expansion reservoir if necessary.
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