Jacobsen ZB Series, Safety, Operation And Maintenance Manual

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7 ADJUSTMENTS
1
7.1 GENERAL PRECAUTIONS ______________________________________________
A trained technician must always do the adjustments and maintenance.
Inspect the equipment according to the maintenance schedule and keep complete records.
a Keep the equipment clean.
b Keep all the moving parts correctly adjusted and lubricated.
c
Replace worn or damaged parts before you operate the mower.
d Keep all fluids at the correct level.
e Keep the guards in position and all hardware tight.
f
Keep the tyres inflated to the correct pressure.
g Do not wear jewelry or loose fitting clothing, when you make adjustments or carry out maintenance.
Refer to the illustrations in the Parts Manual for the removal and assembly of parts.
When you discard hazardous materials (batteries, lubricants, fuel, anti-freeze), follow your local, state or federal-
recommended procedures.
7.2 ENGINE BELTS _______________________________________________________
Check and adjust the auxiliary belt
The fan belt tension is adjusted to prevent the stress on the alternator bearings
and to prevent movement on the alternator pulley. Use the procedure shown
below to check the belt tension at the center of the belt between crank shaft
and alternator pulleys.
Alternator Belt
1. Loosen the alternator bolt (A) and the pivot bolt below the alternator.
2. Move the alternator to tighten or loosen the belt. A deflection of 7 to 9
mm is needed at the center (B) with a load 10Kgf (98N/22lbs) for a new
belt. A deflection of 8 - 10mm is needed for a used belt.
3. Tighten the bolts.
AC Compressor Belt (Mowers with Cab Only)
1. Loosen AC compressor pivot hardware (C).
2. Adjust tensioner bolt (D) as required to tighten or loosen the belt. A
deflection of 3/16 in. (4.7 mm) is needed at the center (E) with a load of
4.62 lbs (2.09 kgf/20.5 N).
3. Tighten the pivot hardware (C).
WARNING
When you clean, adjus t or repair this equipment, Lower all the cutting units to the ground. Engage the parking
brake s witch, s top the engine and remove the key.
Make s ure the mower is parked on a s olid and level s urface. Never work on the mower, if the mower is only held by
the jack. Always us e jack s tands .
Mowers with 2 Post ROPS.
Mowers with cabin.
A
B
A
B
E
C
D