TM 10-8145-222-23
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ADJUST CONTINUED
V-Belt Adjustment
WARNING
The MTRCS contains high voltage sources and exposed rotating parts. Make sure
that power cables are disconnected from the MTRCS and that the refrigeration unit is
shut down before performing maintenance on the unit. Failure to comply with this
warning can result in serious injury or death to personnel.
1. Disconnect negative (-) battery terminal (WP 0053, Disconnect).
2. Place POWER ON/DOWN switch (Figure 1, Item 2) to DOWN position.
WARNING
Falling from the roof of the MTRCS can cause serious personal injury or death. Keep
three points of contact on the MTRCS at all times.
3. Access top of MTRCS using roof access provided.
4. Place emergency stop switch (Figure 2, Item 1) in PUSH TO STOP position.
5. Loosen V-belt idler bolt (Figure 7, Item 1).
CAUTION
Excessive force when placing tension on the standby motor to compressor V-belt
may cause damage to the standby motor. Use hand force only to apply tension. Do
not use pry bar or any other mechanical tool to apply tension to the standby motor to
compressor V-belt during installation or adjustment procedures.
NOTE
When checking V-belt tension using the V-belt tension gauge, place the tension
gauge as close to midpoint as possible between sheaves.
Proper tension for a V-belt is considered to be the lowest allowable tension that the
belt will not slip at during peak load conditions.
6. Use hand pressure to put 30-50 pounds tension on new V-belts (Figure 7, Item 2).
CAUTION
Do not over tighten idler bolt. Over tightening the idler bolt may cause damage to
engine and compressor bearings.
7. Tighten V-belt idler bolt (Figure 7, Item 1) (WP 0091, Introduction).
8. Install top-middle panel (WP 0013, Install).
9. Install top-left panel (WP 0013, Install).
10. Place emergency stop switch (Figure 2, Item 1) in PULL TO START position.
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