11-8 Service and Maintenance
Footnotes — Maintenance
Schedule Additional Required
Services - Severe
(1) Check all fuel and vapor lines
and hoses for proper hook-up,
routing, and condition.
(2) Or every four years, whichever
comes first.
(3) Do not directly power wash the
transfer case output seals. High
pressure water can overcome the
seals and contaminate the transfer
case fluid. Contaminated fluid will
decrease the life of the transfer
case and should be replaced.
(4) Or every five years, whichever
comes first. See Cooling System on
page 10-18.
(5) Or every 10 years, whichever
comes first. Inspect for fraying,
excessive cracking, or damage;
replace, if needed.
(6) Or every 10 years, whichever
comes first.
(7) 2500/3500 series vehicles only.
For severe commercial use
vehicles, see Special Application
Services on page 11-8.
Special Application
Services
.
Vehicles with Dual Wheels:
Check dual wheel nut torque at
160 km/100 mi, 1 600 km/
1,000 mi and 9 700 km/6,000 mi.
.
Severe Commercial Use
Vehicles Only: Lubricate chassis
components every 5 000 km/
3,000 mi.
.
Have underbody flushing service
performed once a year.