SkyTrak 8042 Service Manual - Manual (Page 60)

2.35 Model 8042, 10042, 10054 Legacy Rev. 10/03
General Information and Specifications
2.12.3 After Hydraulic Component Service
1. Check the torque of all fasteners on replaced
hydraulic components.
2. Check that the hoses and tubes are properly
attached, properly positioned and that all the fittings
are properly tightened.
3. If a hydraulic component failed and contaminated
the system:
• Drain the hydraulic oil reservoir
• Flush the system using clean hydraulic oil
• Prime the pump
• Clean the hydraulic oil reservoir
• Change the hydraulic oil filter
4. After normal hydraulic component maintenance,
check the hydraulic oil level and add oil as required.
5. Start the engine and purge the hydraulic system of
air. Operate all boom functions through their full
range of motion several times. Cycle the hoist and
extend cylinders to purge air from the system.
Visually check for leaks.
6. Check operation of all systems in the hydraulic
circuit by operating the controls through all the
functions several times.
2.12.4 After Brake System Service
1. Check the oil level in the axle and replenish with
Universal Tractor Fluid as required.
2. Bleed the air from the brake system.
3. Check the brake pressure.
4. Check the brakes for proper operation.
2.12.5 After Fuel System Service
1. Drain and flush fuel tank, if it was contaminated, with
clean fuel.
2. Replace all the fuel filters.
3. Fill the fuel tank with fresh, clean fuel as required.
4. Bleed the fuel system of air.
2.12.6 After Transmission Service or
Replacement
1. Check transmission oil level and add Universal
Tractor Fluid. Refer to Section 2.6.3, “Transmission,”
for types of transmission lubricants.
2. Replace transmission filter.
3. Check the torque on the drive shaft yoke retaining
strap bolts:
• Upper driveshaft 35 lb-ft (47 Nm)
• Lower driveshaft 60 lb-ft (81 Nm)
4. Refer to the ZF 4WG98 TC Transmission Repair
Manual, P/N 8990455 (ZF P/N 5871 135 002) for
servicing the transmission after overhaul or repair.
5. Wear suitable eye protection. When an overhauled
or repaired transmission is installed, thoroughly
clean the oil cooler lines to and from the
transmission.
6. Drain and flush the entire system.
7. Disconnect and clean all transmission lines.
Whenever it is possible, remove the transmission
lines from the vehicle for cleaning.
8. Thoroughly clean transmission filter screens and
cases, and replace transmission filter elements.
9. “Back flush” the transmission oil cooler with oil and
compressed air until all foreign material is removed.
Flushing in the direction of normal flow does not
adequately clean the cooler. If needed, remove the
transmission oil cooler assembly from the vehicle.
DO NOT use flushing compounds for cleaning
purposes.
10. Reassemble all components and fill the transmission
with clean, fresh Universal Tractor Fluid through the
filler opening until the fluid reaches the FULL mark
on the transmission dipstick.
11. Run the engine at idle for several minutes to help
prime the torque converter and fill the transmission
cooling lines.
12. Recheck the level of the fluid in the transmission with
the engine running at idle.
13. Add Universal Tractor Fluid as necessary to bring
the fluid level up to the FULL mark on the
transmission dipstick. Install the oil dipstick. Recheck
the fluid level when it reaches an operating
temperature 180-200° F (83-94° C).
14. Recheck all drain plugs, lines, connections, etc., for
leaks, and tighten as required.
CAUTION:
DO NOT exceed 165 psi
(11,4 bar) when back flushing the oil cooler.
Applying too much pressure may damage the
oil cooler/radiator.