Chevrolet Low Cab Forward 2023 Manual page 270

No. Service Interval
53 Function of parking brake valve
54 Rubber parts of brake valve
55 Air brake system inspection
56 Slack adjuster lube
57 Slack adjuster service inspection
58 Air brake chamber
59 Air dryer
Air compressor, governor and unloader valve
60
functions
Remarks
(1) In case this column is blank, follow
kilometers (miles).
(2) Use of oils other than CK-4 may require
shorter maintenance intervals and may
cause nonconformity to regulations. Use of
oils with other viscosity than *W-40 may
x1,000 km 16 32 48
x1,000 miles 10 20 30
I I
L L
I I
I I
- -
- -
also require shorter maintenance intervals
and may cause a problem with engine
durability.
(3) See Tire Rotation 0 245.
(4) See the Allison Automatic Transmission
Operator's Manual that came with the
vehicle to confirm maintenance interval by
customer vocation.
64 80 96 112 128
40 50 60 70 80
Every 12 months: I
Every 24 months: R
Every 24 months: R
I I I I I I
L L L L L L
I I I I I I
I I I I I I
- - - - - -
I - - I - -
Service and Maintenance
Service intervals
months or kilometers
144 160 176 (miles) whichever
90 100 110 occurs first
I I I or every 6 months
L L L or every 6 months
I I I or every 6 months
I I I or every 12 months
- R - or every 3 years
I - - or every 12 months
(5) Refer to "Air Cleaner Indicator Light." See
Engine Air Cleaner/Filter 0 202.
(6) Initial check at 1 040 km (650 mi) is
required.
(7) Initial check at 8 000 km (5,000 mi) is
required.
(8) Initial check at 1 600 km (1,000 mi) is
required.
269
(1)