Gravely Pro-Master PM 320 HD - Maintenance

GB - 17
Gravely Dealers will provide any service or
adjustments which may be required to keep
your unit operating at peak efficiency. Should
engine service be required, contact an
Gravely dealer or an authorized engine
manufacturer's service center.
Refer to the engine manufacturer’s manual
for recommended service intervals and
detailed instructions.
1
Change more often in dirty, dusty
conditions.
CHECKING SAFETY INTERLOCK
SYSTEM
Test the safety interlock system before each
use. If the system does not function properly,
do not operate the unit until repairs are made.
See Safety Interlock System on page 13.
CHECK FASTENERS
Be certain that all hardware is tightened to
the proper torque. Pay special attention to
mower blades, guards and safety shields.
CHECK PARKING BRAKE
With parking brake engaged, push unit.
1. Engage parking brake, shut off engine
and remove key.
2. Disengage transmission. See Moving
Unit Manually on page 16. in Operation
on page 13..
3. Push unit.
If unit rolls, adjust parking brake. See
Adjusting Parking Brake on page 21.
CHECK TIRES
Adjust front tires to 12 - 15 PSI (82.8 -
103.4 kPa). Adjust rear tires to 20 - 25 PSI
(137.9 - 172.4 kPa).
CHECK HYDRAULIC OIL LEVEL
Check hydraulic oil level before each use.
IMPORTANT: Hydraulic tank MUST be filled
before starting engine.
MAINTENANCE
WARNING: AVOID INJURY. Read
and understand entire Safety
section before proceeding.
MAINTENANCE SCHEDULE
Intervals Service Performed
Before each
use:
Check Safety Interlock
System
Check Fasteners
Check Parking Brake
Check Tires
Check Hydraulic Oil Level
Clean Unit
Check Engine Oil Level
Check Air Cleaner
1
Check Air Intake
1
Every 25
hours:
Check and Clean Battery
Clean Hydraulic Pump
Lubricate Unit
Service Precleaner
1
Check Engine Oil Cooler
1
Clean Hydraulic Oil Cooler
Every 50
hours:
Inspect Spark Arrestor
After first 75
hours:
Replace Hydraulic Oil Filter
Every 100
hours:
Check Belts
Replace Air Cleaner
1
Clean Cooling Areas
1
Every 200
hours:
Change Engine Oil Filter
Check Spark Plugs
Every 400
hours:
Replace Hydraulic Oil Filter
Every season: Check Belts
Before storage: Check Fasteners
Check and Clean Battery
Clean Hydraulic Pump
Lubricate Unit
Clean Unit
CAUTION: Safety interlock
system failure and improper
operation of unit can result in
death or serious injury. Test this
system each time the unit is
operated. If this system does not
function as described, do not
operate until repairs are made.
MAINTENANCE SCHEDULE
Intervals Service Performed