JLG 4017PS Service Manual - Manual (Page 115)

6-5 3706PS, 3707PS, 4014PS, 4017PS, 33.7, 37.6, 37.7
Transmission
6.4.3 After Transmission Service or
Replacement
In general:
1. Disconnect and clean all transmission hoses. When
possible, remove transmission lines from the
machine for cleaning.
2. Properly clean the transmission oil cooler.
3. Install a new hydraulic filter.
4. Check the transfer case oil level and add oil as
required.
• Transfer Case: Remove the transfer case fill plug
and verify oil is at the thread opening. Add oil if
required and torque plug to 34-44 lb-ft (46-60 Nm).
5. Check the transmission oil level and add oil as
required.
• Transmission: With engine runningat low idle and
the transmissiom cold, check the oil level. Verify oil
level is at the “Max” mark on the dipstick. Add oil if
required.
6. Check the torque on the drive shaft yoke capscrews.
7. Reassemble all components and check the level of
hydraulic oil in the hydraulic oil reservoir. If required
fill with clean, fresh oil until oil level is visible in the
lower gauge window (7). DO NOT overfill.
8. Run the engine for two minutes at idle to help prime the
transmission oil lines.
9. Recheck the level of the fluid in the hydraulic oil
reservoir with the engine running at idle.
10. Add oil as necessary until oil level is visible in the
upper gauge window (8). Recheck the oil level when
it reaches operating temperature 83-94° C
(180-200° F).
11. Recheck all drain plugs, lines, connections, etc., for
leaks, and tighten where necessary.
6.4.4 Transmission Torque Converter Stall
Test
1. Start the machine and bring engine to normal
operating temperature.
Engine - 75° ± 5° C (167° ± 40° F)
Hydraulic Oil - 60° ± 5° C (140° ± 40° F)
Torque Converter - 80° ± 5° C (176° ± 40° F)
2. Ensure that the transmission neutralizer switch is in
the OFF position.
3. With the engine at high idle and the service brake
fully depressed, shift the transmission into the
highest forward gear.
4. With the transmission in the stall condition, the
torque converter speed output should be 0 rpm.
5. Record the stall speed at a steady state condition
after 10 seconds in the stall state.
6. Shift the transmission back to neutral after
completion of the test. Allow engine to idle for two
minutes to allow transmission to return to normal
operating temperatures.
7. Refer to Section 2.4.7, “Transmission Performance
Specifications,” for detailed stall speed information.
6.5 TORQUE CONVERTOR DIAPHRAGM
6.5.1 Torque Convertor Diaphragm
Removal/Installation
Refer to Section 6.3, “Specifications and Maintenance
Information,” for detailed Torque Convertor Information.
6.6 TROUBLESHOOTING
Refer to Section 6.3, “Specifications and Maintenance
Information,” for detailed Torque Convertor Information.
MAM0780
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