Model 20 Transfer Case In-Vehicle Service - Jeep 1979 CJ-5 Technical & Service Manual

L
TRANSFER-CUE- 11-3
Trailer Towing and Campers
. The Jeep Corporation new vehicle warranty includes
conditions and limitations for vehicles used in towing
trailers or campers or installation of slide-in campers on
Jeep Trucks. The requirements and recommendations in
this manual and other factory literature must be fol-
lowed in order to maintain this coverage..
In addition to the vehicle maintenance and servicing
requirements set forth in this manual, the GVW and
GAW ratings are of special significance. When a Jeep
vehicle is to be used for trailer or camper towing or
slide-in camper installations in Jeep Tracks, it is ex-
tremely important that the GVW or GAW ratings not be
exceeded by the addition of:
• The tongue weight of a trailer.
• The weight transferred to a Truck model by the
mounting of a fifth-wheel trailer.
• The weight of a slide-in camper or any other type of
truck camper.
• The weight of any other type of vehicle put in or on
the towing vehicle.
Remember that additional items placed in or on the
trailer or mounted camper will add to the load.
C A U T I O N : Jeep Corporation will not be responsible
for brake performance if the Jeep vehicle and trailer
hydraulic brake systems are interconnected in any way.
A separate brake system is recommended, and actually
required in some states, for all trailers weighing over
1,000 pounds (1+53.6 kg) gross.
IN-VEHICLE SERVICE
Shift Rod Oil Seal Replacement
Cherokee-Truck
(1) On models with 3-speed transmission, shift
transfer case into 2H position and remove shift lever
knob and boot.
Service Diagnosis—Model 20 Transfer Case
Condition Possible Cause
Correction
J U M P S OUT O F 2 WD (1) Main shaft gear disengaged
from r e a r output shaft
sliding gear.
(1) Check torque on main shaft
gear nut.
(2) Shift lever torsion spring
not holding.
(2) Replace spring.
J U M P S OUT OF 4 W D H I G H
(1) F r o n t output shaft sliding
gear disengaged from front
output shaft gear.
(1) Excessive end play,
worn or bent shift fork.
(2) Main shaft gear disengaged
from r e a r output shaft
sliding gear.
(2) Check torque on mainshaft
gear nut.
(3) Shift lever torsion spring -
not holding.
(3) Replace torsion spring.
(4) Rear shift rod poppet spring
not holding.
(4) Replace poppet spring.
70540