Chevrolet 10 Series 1970 Service Manual page 230

REAR SUSPENSION AND DRIVE LINE 4-54
3. Check tension o f va lv e spring. If not within lim its
liste d in " S p ecifica tion s" replace with new spring.
Fig. 91 — D iffe r e n tia l Lo ckin g C y lin d e r
1. D iffe r e n tia l C a rrie r C o ve r
2. B racket
3. Push Rod Y oke
4. Boot
5. Lo cknut
6. Push Rod
7. Snap Ring
8. D ow el
9. C y lin d e r (In n e r H a lf)
F ig . 9 0 — D iffe r e n tia l Lock V acuum System (T y p ic a l)
10. Diaphragm
11. C y lin d e r (O u te r H a lf)
12. Vacuum Line F ittin g
13. N u t
14. Plate W asher
15. P late (Large)
16. Plate (S m a ll)
17. L o c k -O u t S h ift
Lever
Assembly
1. Install new plunger " O " ring (9) on plunger (14), and
" O "
new cap nut ring (9) on cap nut (10).
2. Install plunger return spring (13) on plunger (14)
then install assem bly in va lve body.
3. Coat fulcrum pin (3)
ligh tly with chassis lubricant. P osition control le v e r
(4) in va lve body and install fulcrum pin. Stake edge
of fulcrum pin hole in va lve body to hold pin in place.
F ig . 9 2 —D iffe r e n tia l Lock C o n tro l Knob
and control le v e r cam (4)
CHEVROLET TRUCK SERVICE MANUAL