Periodic Service Schedule
PERIODIC SERVICE SCHEDULE
REGULAR INTERVAL
SERVICE
Pre-Operation and Daily Safety Checklist
See Pre-Operation and Daily Safety
Checklist on page 22.
Daily service by owner
Performance Inspection
See Performance Inspection on page 23.
Check engine oil level; add if necessary.
See
Engine Oil Level Check on page 39.
Engine
Diesel vehicles:
Check engine coolant; add if
necessary.
See Engine Coolant Level Check
on page 46.
Fuel filters
Diesel vehicles:
Drain water from fuel filter.
See Draining Water from Fuel Filter on
page 49.
Daily service by owner or trained technician
Brakes
Check brake fluid; add if necessary. Check
brake pedal for proper operation.
See
Performance Inspection on page 23.
Engine
Check engine circulating air passage; visually
inspect unshrouded area around engine
exhaust for grass and debris and clean if
necessary.
Diesel vehicles:
Check for grass
and debris around the radiator.
Tires
Check air pressure and adjust if necessary.
See Vehicle Specifications on page 56.
Transmission and differentials
Check lubricant levels. Add if necessary.
See Lubrication Level Check for Front
Differential, Transmission, and Rear
Differential on page 44.
Monthly service by owner or trained
technician
General vehicle
Wash engine compartment and underside of
vehicle. Do not wash engine when hot.
Battery
Clean terminals and wash dirt from casing;
check electrolyte level. Add distilled water if
necessary.
See page 50.
Front wheel alignment and toe-in
Check and adjust if necessary.
See Steering
and Front Suspension Section in the
appropriate maintenance and service
manual.
Electrical wiring and connections
Check for tightness and damage.
Inspect master cylinder, brake lines, and hoses
for damage or leakage.
Check park brake cables for damage; replace
if necessary.
Semiannual service by trained technician
only (or every 50 hours of operation,
whichever comes first)
Brake system
Check brake pads and discs; replace if
necessary.
For brake wear-in procedure,
see Hydraulic Brakes in the Pre-Operation
and Daily Safety Checklist on page 22.
See also Brake System Section in the
Page 34
HUV 4421 Owner’s Manual
Summary of Contents for 4421-DXL
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