39
JACK MAINTENANCE
The following procedures should be performed at least annually.
SIDE-WIND MODELS
•
The internal gearing and bushings of the jack must be kept lubricated. Apply a small amount of automotive
grease to the internal gearing by removing the jack cover, or if equipped, use a needle nose applicator or
standard grease gun on the lubrication point found on the side of the jack near the crank. Rotate the jack
handle to distribute the grease evenly.
•
A lightweight oil must be applied to the handle unit at both sides of the tube.
•
If equipped, the axle bolt and nut assembly of the caster wheel must also be lubricated with the same light
weight oil.
TOP-WIND MODELS
•
Apply a lightweight oil to the screw stem.
CHECKING GENERATOR DRIVE PLATE TORQUE
Follow the procedure below to check the torque of the generator drive plate bolts in accordance with the maintenance
chart. Refer to
“Basic Maintenance Schedule - John Deere Engine” on page 37
.
1. Disconnect the engine starting battery.
2. Remove the generator fan guard.
3. Torque each of the drive plate bolts to the appropriate specification in the table below.
4. Reinstall the generator fan guard. Reconnect the battery.
VISCOUS FAN CLUTCH
The viscous fan clutch option allows the engine cooling fan to engage at lower speeds and disengage at higher
speeds, increasing cooling system efficiency. The cooling fan will engage at full speed when the coolant temperature
rises. When the fan is operating at full speed, it will switch to a slower speed when the coolant temperature drops.
There will be an audible difference when the engine cooling fan switches speeds. Depending on unit model, the
temperature ranges vary between 170°F and 200ºF (77°F and 93ºC).
Unit
ft-lbs (Nm)
MMG75CAN6
36 (49)
MMG100CAN6
36 (49)
2LO
*UHDVH
2LO
*UHDVH
2LO
2LO
2LO
*UHDVH
Содержание MMG75CAN6
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