Chevrolet 10 Series 1970 Service Manual page 231

4. Position new va lve (7) and valve spring (8) in va lve
body (6) and install cap nut (10). Tighten nut fir m ly .
5. Install te ll tale lamp switch.
installation
1. P osition con trol va lve on mounting bracket and in ­
stall two screw s.
2. Connect con trol cable to con trol le v e r .
3. Connect a ir in let and check va lve fittin gs.
4. Connect te ll tale lamp connectors to switch.
Check system fo r leaks and p ro p er operation.
5 .
A ir Shift C ylinder
A piston type shift cylin d er is mounted on forw ard rea r
ax le torque d iv id er case c o ver.
to slidin g clutch. As a ir p ressu re is applied to piston,
slidin g clutch is shifted into locked position. When a ir
p re ss u re is exhausted fro m shift cylin d er, spring p r e s ­
sure returns slidin g clutch to unlocked position.
Shift cylin d er should be rem oved, disassem bled, and
the piston seals replaced w henever leakage is indicated
at the cylin d er.
D ifferential Lockout
Removal and Installation
R em oval and installation instructions may be found in
the ' 'Overhaul M a n u a l "
L o c k o u t" o r " A ir O perated L o c k o u t".
Fig. 9 3 — S e c tio n a l V ie w o f C o n tro l V a lv e
1. M o u n tin g B racke t
2. M o u n tin g Screw
3. Fulcrum Pin
4 . C o n tro l Lever
5. Exhaust Port
6. Body
7. V a lv e Disc
PROPELLER SHAFTS, UNIVERSAL JOINTS
General D e s crip tio n ................
Maintenance and Adjustm ent
C om ponent Part Replacem ent
Propeller Shafts
Rem oval ...........................
Tubular type p ro p e lle r shafts and needle bearing type
u n iversal joints are used on a ll m odel trucks. An in te r ­
nally splined sleeve which com pensates fo r variation in
distance between re a r axle and tran sm ission is located at
the fo rw a rd end o f single
(fig . 94).
Piston rod is connected
under " V a c u u m Operated
8. V a lv e Spring
9. " 0 "
Ring
10. Cap N u t
11. In le t
12. O u tle t
13. P lunger Spring
14. P lunger
AND BEARING SUPPORTS
Page
4-55
4-56
4-57
4-57
GENERAL DESCRIPTION
o r re a r p ro p e lle r shafts
INDEX
In s p e c tio n ............................................... ......................................
Disassembly ........................................ ......................................
Assembly ............................................ ......................................
Installation ............................................ ......................................
The number o f p ro p e lle r shafts used is dependent upon
the wheel base o f the veh icle. On veh icles which use two
o r m ore p r o p e lle r shafts, each shaft (except the r e a r) is
supported near its splined end in a rubber cushioned ball
bearin g which is mounted in a bracket attached to a fra m e
crossm em b er. The ball bearin g is a perm anently sealed
and lubricated type.
REAR SUSPENSION AND DRIVE LINE 4-55
CHEVROLET TRUCK SERVICE MANUAL
Page
4-57
4-57
4-57
4-57