37
S
ERVICE
S
CHEDULE
F
OR
S
UPRA 950
Petroleum and
Synthetic Oil-
Without Bypass
At 250 Hours
D
Check engine cooling system.
D
Check and clean the air filter.
D
Check all bolts, screws and unit mounting bolts
for tightness. Tighten as required.
D
Check all belts.
Petroleum Oil
Without Bypass
At 1000 and ev-
ery 1000 hours
after
Synthetic Oil-
Without Bypass
At 1500, 3000
and 4000 hours
D
Replace lube oil and filter.
D
Check engine cooling system.
D
Check and clean the air filter.
D
Check all belts.
Petroleum and
Synthetic Oil
Without Bypass
At 1500 Hours
D
Check fuel pump filter.
D
Replace the cartridge of the dry air filter.
D
Check battery terminals and fluid level.
D
Check compressor oil level. Use polyol ester
oil (POE) approved by CARRIER.
D
Check alternator brushes. Check for diesel and
standby hours.
D
Check engine thermostat.
D
Check defrost:
-- Check timer setting and function
-- Check refrigerant control valves
-- Fans stop or defrost damper closes
-- Defrost ends automatically
-- Water drains from evaporator
D
Check fan motor brushes.
D
Check and adjust rocker arms.
D
Check belts as necessary.
Petroleum and
Synthetic Oil
Without Bypass
At 2000 Hours
D
Replace oil filter.
D
Clean radiator/condenser coil.
D
Check refrigerant level.
Petroleum and
Synthetic Oil
Without Bypass
At 3000 Hours
D
Change fan motor brushes.
D
Check and rebuild alternator.
D
Check engine speed:
High -- 2300 to 2350
Low -- 1800 to 1850