MAINTENANCE
1550 Gas/LPG/Diesel MM283 (2--05)
3--36
BELTS AND CHAINS
VACUUM FAN DRIVE BELT -- Gas/LPG
ENGINES (For machines below serial number
001508)
VACUUM FAN DRIVE BELT -- DIESEL
ENGINES (For machines serial number 001000
and above)
The vacuum fan drive belt tension should be
checked after every 50 hours of operation. The
proper belt tension for gasoline and LPG
machines is obtained when the midpoint of the
belt deflects 0.34 in (9 mm) from a force of 7 to 8
lb (3.2 to 3.6 kg). The proper belt tension for
diesel machines is obtained when the midpoint of
the belt deflects 8 to 9 lb (3.6 to 4.0 kg).
TO ADJUST VACUUM FAN DRIVE BELT
1. Stop the engine and set the machine
parking brake.
FOR SAFETY: Before Leaving Or
Servicing Machine; Stop On Level
Surface, Set Parking Brake, Turn Off
Machine And Remove Key.
2. Raise the engine cover.
FOR SAFETY: When Servicing Machine,
Avoid Moving Parts. Do Not Wear Loose
Jackets, Shirts, Or Sleeves When
Working On Machine.
3. Loosen the jam nuts on the tension spring
eyebolt.
4. Thread the tension spring eyebolt in to
tighten the vacuum fan drive belt or out to
loosen the vacuum fan drive belt to get the
desired belt tension.
5. Tighten the tension spring eyebolt jam nuts.
6. Lower the engine cover.
A
B
C
D
E
06973
ADJUSTING VACUUM FAN BELT
A. Vacuum Fan Housing
B. Tension Spring
C. Tension Spring Eyebolt.
D. Jam Nut
E. Vacuum Fan Drive Belt
ALTERNATOR AND RADIATOR FAN BELT
The alternator and radiator fan belt tension should
be checked after every 100 hours of operation.
The proper belt tension is obtained when the
midpoint of the belt’s longest span deflects 0.50 in
(13 mm) from a force of 10 to 12 lb (5 to 6 kg).
TO ADJUST ALTERNATOR AND RADIATOR
FAN BELT
1. Stop the engine and set the machine
parking brake.
FOR SAFETY: Before Leaving Or
Servicing Machine; Stop On Level
Surface, Set Parking Brake, Turn Off
Machine And Remove Key.
2. Open the left rear engine access door.
3. Loosen the alternator clamp bolt.
4. Push the alternator out to tighten the belt.
ATTENTION! Do not use a pry bar
against the alternator to tighten the belt.
Using a pry bar may damage the
alternator.
5. Tighten the alternator clamp bolt.
6. Check the belt deflection; adjust if
necessary.
7. Close the left rear engine access door.
Summary of Contents for 1550
Page 16: ...SPECIFICATIONS 1550 Gas LPG Diesel MM283 6 91 1 2 ...
Page 100: ...APPENDIX 1550 Gas LPG Diesel MM283 6 91 4 2 ...
Page 112: ...STANDARD PARTS 1550 Gas LPG Diesel MM283 11 07 6 6 ...
Page 237: ...STANDARD PARTS 6 131 1550 Gas LPG Diesel MM283 3 11 ...
Page 286: ...STANDARD PARTS 1550 Gas LPG Diesel MM283 8 02 6 180 ...
Page 301: ...LPG PARTS 7 15 1550 Gas LPG Diesel MM283 11 07 ...
Page 363: ...DIESEL PARTS 8 53 1550 Gas LPG Diesel MM283 2 05 ...
Page 378: ...DIESEL PARTS 1550 Gas LPG Diesel MM283 2 05 8 68 ...
Page 436: ...BREAKDOWNS 1550 Gas LPG Diesel MM283 8 02 10 38 ...
Page 456: ...CONTINENTAL ENGINE BREAKDOWN GASOLINE LPG 1550 Gas LPG Diesel MM283 2 95 11 20 ...
Page 534: ...PERKINS ENGINE BREAKDOWN DIESEL 1550 Gas LPG Diesel MM283 9 01 15 30 ...
Page 562: ...1011676 CAT ENGINE BREAKDOWN DIESEL 1550 Gas LPG Diesel MM283 2 05 16 28 ...