H&S GM 170, Operator'S Manual And Parts List

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SERVICE
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HYDRAULIC SYSTEM
Hydraulic Pump Sheave Alignment
The hydraulic pump drive and driven sheaves must be maintained in correct alignment and be tightly
secured at all times.
Hydraulic Pump Belt Tension
Overload protection for the hydraulic pump is provided by a self-adjusting spring tightener that requires
no adjustment. The idler pulley must be properly positioned to keep the belt aligned with the sheaves.
Cyclonic Hydraulic Reservoir
The oil filter should be replaced once a year or every 75 hours of operation, whichever comes first.
The oil should be drained and replaced every two years or every 150 hours of operation, whichever
comes first. Keep oil filled to proper level.
MILL/BLOWER DRIVE
Belt Replacement
To replace the mill/blower drive belt, perform the following steps:
1. Disengauge PTO, shut-off tractor and remove key.
2. Release front drive chain tension.
3. Loosen both of the bolt/nut (A & B) assemblies on the main
drive shaft.
5. After tension is released, remove the old belt and replace
with a new Belt.
6. Adjust the new belt tension per the Adjustment Chapter of
this manual. After tension is properly adjusted, re-connect
the front drive chain idler bracket spring.
IMPORTANT: The mill/blower drive belt will deteriorate more rapidly if improper tension is applied. Uneven
sheave alignment will result in uneven belt stretch. Improper mill/blower belt tension will produce excessive
pressure on the mill/blower bearings and cause premature bearing failure.
A B