Maintenance & Repair
48
Drive belt
maintenance
Check drive belt tension after first 24 hours of running and then
routinely with each oil change.
Tighten or replace belts as needed
.
Always
tighten belts if slipping.
WARNING:
Belt slippage can cause static electricity build-up, which may result in
sparking. Fire ignition can result.
Instructions:
1)
Make sure engine is off and spark plug wire is removed.
2)
Remove belt guard. See "Parts Breakdown" section of this manual for
location.
3)
Loosen pump mounting bolts (4).
4)
Inspect belts for wear/damage. Replace as needed. When replacing
belts, always replace all three – don't mix old and new belts.
5)
Tighten tension bolt to achieve the recommended belt tension specified
below. (Tightening the tension bolt pulls the pump away from the
engine, tightening all three belts simultaneously.)
Tension Specifications
New belt
Used Belt
Static tension (per rib/strand):
87.0-93.2 lb.
74.5-80.8 lb.
Rib/strand Deflections Distance:
0.2 in
0.2in
Rib/Strand Deflection Force:
5.9-6.3 lb.
5.2-5.5 lb.
Sonic Tension Meter:
387 to 414 N
332 to 359N
Note: Some general rules of belt tension are:
The ideal tension is the lowest tension without belt slippage
Over tightening decreases belt and bearing life.
Keep belts clean and free of foreign material that may cause slippage
Do not apply belt dressing, which can cause damage and early belt
failure.
6)
Ensure all three belts are the same tension.
7)
Re-tighten pump mounting bolts. Torque to 29.4 ft-lbs.
8)
Replace belt guard.
WARNING
:
Do not operate unless belt guard is in place to prevent access to rotating
parts. Clothing or hair can become rapidly entangled in unguarded
rotating parts, resulting in serious injury or death.
Содержание M157593E
Страница 51: ...Parts Explosion M157593 Rev E 51...
Страница 55: ...Wiring Diagram Rev E 55...
Страница 62: ...62 Manufactured by Northern Tool Equipment Co Inc Burnsville MN 55306 NorthernTool com...
