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Checking and Greasing the Road
Wheels
Service Interval: Every 250 hours
1. Remove the tracks; refer to Replacing the Tracks.
2. Remove the snap ring and cap from a road wheel
(Figure 51).
Figure 51
1. Road wheel
2. Road wheel cap
3. Check the grease under the cap and around the
gasket (Figure 51). If it is dirty, gritty, or depleted,
clean out all of the grease, replace the gasket, and
add new grease.
4. Ensure that the road wheel turns smoothly on the
bearing. If it is frozen, contact your Authorized
Service Dealer to replace the road wheel.
5. Place the greased road wheel cap over the bolt head
(Figure 51).
6. Secure the road wheel cap with the snap ring
(Figure 51).
7. Repeat steps 2 through 6 for all 12 road wheels.
8. Install the tracks; refer to Replacing the Tracks.
3. Snap ring
Belt Maintenance
Replacing the Pump Drive Belt
If the pump drive belt begins to squeal or is cracked,
worn, or frayed, replace it. Contact you Authorized
Service Dealer for a replacement belt.
1. Raise the boom and set the parking brake.
2. Stop the engine, remove the key, and wait for all
moving parts to stop before leaving the operating
position.
3. Raise the back of the machine and support it on jack
stands.
4. Remove the bottom shield; refer to Removing the
Bottom Shield.
5. Loosen the two pump bolts (Figure 52).
1. Pump
2. Pump bolts
6. Twist the pump counter clockwise and allow it to
drop down away from the pulley (Figure 52). Ensure
that the spider coupler drops down with the pump.
7. Using a spring puller (contact your Authorized
Service Dealer) or stiff metal hook, pull the end of
the idler pulley sprint off of the spring bolt to release
tension on the belt (Figure 52).
8. Remove the belt.
9. Route a new belt around the pulleys.
10. Install the idler pulley spring on the bolt.
11. Ensure that the spider coupler is in place on the
pump and then insert it into the pulley, twisting it
clockwise to seat it on the pump bolts.
12. Torque the pump bolts to 50 ft-lb (68 N-m).
13. Install the bottom shield.
36
Figure 52
3. Belt
4. Idler pulley spring
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