jcb JS200 Service Manual page 53

Section 3
8 - 5
Adjusting the Fan Belt
! WARNING !
Make sure the engine cannot be started. Disconnect the
battery before doing this job.
2-3-3-5
1. Check the Fan Belt Tension
There must be 10 mm (0,4 in) slack at D on the belt.
2. Loosen the Alternator
Slacken bolts A and B.
3. Adjust the Fan Belt
Use tension bolt C to adjust the alternator so that there is
10 mm (0.4 in) slack at point D on the belt.
Note: If the fan belt is stretched so much that it cannot
be adjusted correctly, fit a new belt (see below).
4. Secure the Alternator
Re-tighten bolts B. Then re-tighten bolt A.
Fitting a New Fan Belt
1. Loosen the Alternator
Slacken bolts A and B and adjust tensioner C so that the
fan belt can be removed.
2. Fit a New Fan Belt
With the alternator located as in 1, fit a new belt, making
sure its 'V' profile locates in the pulleys correctly.
Note: It may be necessary to apply slight leverage to the
new belt to get it over the pulleys.
3. Adjust the Fan Belt
Carry out steps 3 and 4 of Adjusting the Fan Belt.
4 . Re-check the Fan belt Tension
After about 1 hour's running re-check the belt tension.
9803/6400
Routine Maintenance
Engine (continued)
B
Section 3
8 - 5
D
A
C
Issue 1