Chain Tension Check; Chain Tension Adjustment - Terex TSV-70 Operation And Maintenance Manual

7.17 Chain Tension Check

Proper chain tension should be main-
tained to minimize wear and prevent
damage to the final drive system. Chain
tension should be checked every 500
hours and adjusted as necessary.
To check chain tension:
1. Shut the machine down as described in section 5.13, then elevate and
support the front of the machine as described in section 6.4. The front tires
must be off of the ground to perform this inspection.
2. Rotate the wheel forward and backward checking for free play at the
wheel (a result of slack in the drive chains). Measure total free play "A".
Note: Total free play measured along the circumference of the tire should not
exceed 0.6" (15mm). If the free play measurement is less than this amount, no
further action is required. If the free play measurement exceeds this amount,
adjustment is required. Check all four wheels in this manner for proper tension.

7.18 Chain Tension Adjustment

To adjust chain tension:
1. Shut the machine down as
described in section 5.13, then
elevate and support the front of the
machine as described in section
6.4 (chock the rear wheels).
2. Remove the lug nuts securing the front
wheel to the pod, then remove the wheel
(use a suitable hoist and lifting straps).
3. Remove the chain case side cover plate to
access the chains for adjustment.
4. Loosen the eight nuts "B" securing the
front wheel pod to the chassis.
5. Use a screw jack (or similar device) to slide the front wheel pod forward
until chain free play "C" measures 0.6" (15mm) (lower chain is taut "D").
6. Tighten the nuts "B" securing the wheel pod to the chassis to 150+/- 8
ft. lb. (203 Nm) in the order shown in figure 7.18-2.
7. Install the wheel by reversing step 2, torque to 150 +/- 8 ft. lb. (203 Nm).
8. Repeat steps 2-7 of this procedure on the opposite side of the machine to
complete front chain adjustment. Reverse step 1 to lower the front wheels.
9. Repeat this procedure on the rear of the machine to adjust rear chain
tension. Then clean the chain case covers and chassis to remove old
sealant. Once clean, apply sealant to each cover and reinstall.
7.17-1
B
8
3
77
7 MAINTENANCE
A
C
7.18-1
D
1 6
4
7
7.18-2
5 2