SkyTrak 8042 Service Manual - Manual (Page 489)

Hydraulic System
8.74 Model 8042, 10042, 10054 Legacy Rev. 10/03
3. Place the pump (4) and a new, oiled o-ring (22) into
position on the transmission. Align the pump shaft
with the internal transmission gear, so that the
machined teeth mesh together.
4. Align the bolt holes with the pump mount holes.
Secure the pump to the transmission with four plain
washers (21), four lockwashers (20) and four
capscrews (19).
5. If necessary, slide the T-bolt band clamp (7) onto the
pump inlet hose (5). Secure the hose to the hydraulic
reservoir outlet connection with the T-bolt band clamp.
6. Place a new oiled o-ring (6) into position over the
pump opening. Secure the inlet hose (5) with two
flange halves (3), four lockwashers (2) and four
capscrews (1).
7. Connect the load sense lines (17) to the Tee fitting
(18).
8. Install the tank hose (14) onto the check valve
manifold (11).
9. Place a new, oiled o-ring (13) into position over the
opening on the check valve manifold (11). Secure
the outlet hose (12) with two flange halves (10), four
lockwashers (9) and four capscrews (8).
10. Fill the hydraulic reservoir with clean, filtered
hydraulic oil.
11. Prime the pump by filling the case drain port (23) with
fresh, filtered hydraulic oil from a clean container before
installing the case drain connector (16) and hose (15).
12. Check all routing of hoses and tubing for sharp
bends or interference with any rotating members. All
tube and hose clamps must be tight.
13. Start the engine and run at approximately one-third
to one-half throttle for about one minute without
moving the vehicle or operating any hydraulic
functions.
14. Inspect for leaks and check all fluid levels. The
hydraulic reservoir oil level must be to the middle of
the sight gauge.
Note: Check for leaks and repair as required before
continuing.
i. Pump Test
Refer to Section 8.7, “Hydraulic System Testing.”
1. Perform a flow meter test on the pump.
2. Check the load sense.
3. Check the system functions.
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WARNING:
Avoid prolonged engine
operation in closed areas with inadequate
ventilation. Failure to properly ventilate exhaust
fumes can result in death or serious injury.
WARNING:
Hydraulic oil leaking under
pressure can penetrate the skin and cause
severe personal injury. DO NOT use your hand
or any part of your body to check for hydraulic
leaks. When checking for hydraulic leaks, wear
safety glasses and gloves to help provide
protection from spraying hydraulic oil. Use a
piece of cardboard or paper to search for
leaks.