Chevrolet 10 Series 1970 Service Manual page 521

F ig . 19—T ilt Cab M ast J a c k e t M o u n tin g
4 0 -5 0 - 6 0 Series
1. F ro m passenger side of fir e w a ll, ca refu lly in sert the
lo w e r end of the m ast jacket through the fire w a ll
opening, guiding the steerin g coupling onto the s te e r ­
ing g ea r worm shaft.
2. L o o se ly install m ast jacket clam p at dash panel.
3. Adjust the position of the m ast jacket and tighten
clam ps, maintaining
dim ension of .250 to .375 inches, if so equipped.
NOTE: The steerin g coupling to steerin g gear
fasten er is an im portant attaching part in that it
could affect the p erform a n ce of vita l components
and system s, and/or could resu lt in m a jor r e ­
p a ir expense. It must be rep la ced with one of
the sam e part number o r with an equivalent part
if replacem en t becom es n ecessa ry.
a replacem ent part of le s s e r quality or substitute
design. Torque values must be used as specified
during reassem b ly to assure p ro p er retention of
this part.
4. In stall seal at fir e w a ll.
5. Adjust the lo w er m ast jacket b earing as outlined un­
d er Maintenance and Adjustm ents.
6. Connect d irection al signal w irin g harness.
7. Install steerin g wheel as outlined under "S teerin g
W h eel—Installation."
a lo w er ra g joint to flange
Do not use
8. Connect battery ground cable.
STEERING C OLUM N-TILT CAB MODELS (Fig. 19)
Removal
1. Bend tabs of dust cap away fro m yoke tube, on in ter­
m ediate steerin g shaft yoke tube.
2. Slide dust cap, plastic washer and fe lt washer down
on yoke shaft.
3. Disconnect w irin g harness fro m m ast jacket - rem ove
each lead fro m the connector and m ark its location in
the connector.
4. Rem ove m ast jacket support clamps.
5. R em ove mast jacket assem bly fro m veh icle.
6. If n ecessary, rem o ve steerin g wheel as outlined un­
d er ' 'STEERING W H E E L - R e m o v a l."
NOTE: D isassem bly and assem bly procedu res
fo r the tilt cab maSt jacket are the sam e as those
outlined previo u sly fo r 40-50-60 serie s .
Installation
1. With mast jacket com pletely assem bled and in te r­
m ediate steerin g shaft yoke tube assem bled to upper
steerin g shaft, place assem bly in veh icle and a ssem ­
b le interm ediate shaft yoke tube to yoke shaft, align­
ing the arrow s.
2. Hold mast jacket in position at dash paneland assem ­
ble support clam ps.
3. Push fe lt washer, p lastic washer and dust cap into
position and secure by bending tabs o f dust cap
against yoke tube.
4. Connect w irin g harness to mast jacket.
STEERING LINKAGE (Figs. 2 0 -2 1 -2 2 )
NOTE: A ll steerin g linkage fasten ers are im ­
portant attaching p a rts in that they could affect
the p erform a n ce of vita l components and sys­
tem s, and/or could resu lt in m ajor re p a ir ex­
pense. They must be replaced with parts of the
sam e part numbers o r with equivalent parts if
replacem ent becom es
replacem ent p arts of le s s e r quality o r substi­
tute design. Torqu e values must be used as
F ig . 20—C - P l 0 - 2 0 -3 0 Series S teering Linkage
STEERING 9-13
n ecessary. Do not use
CHEVROLET TRUCK SERVICE MANUAL