Tilting Mechanism; Operation; Adjustment; Torsion Bar - Chevrolet 30 Series 1967 Service Manual

BODY IB -40
Fig. 90 - Left Hand Support Bracket Installation
9. Tighten steering coupling clamp bolt 15 to 22 ft. lbs.
Connect speedometer cable and all electric connec­
tors that junction with the cab-to-chassis.
10. Connect accelerator linkage and adjust as outlined
under Maintenance and Adjustments-Engines. Con­
nect all ground straps.
11. Connect brake hoses and bleed brakes as outlined
under Service Operations-Brakes.
12. Connect clutch flexible line and bleed as outlined
under Service Operations-Clutch.
13. Connect heater hoses and fill radiator.
battery ground strap and install radiator grille
assembly.
14. Install bumper and bumper filler panel.
NOTE: Check tilting and locking action. Ad­
just if necessary following procedure outlined in
this section.

TILTING MECHANISM

Operation

To Raise Cab
(Refer to Figure 91)
NOTE: Before tilting cab forward, remove or
position loose articles safely in cab, also place
transmission shift lever in neutral and apply
hand brake.
1. Close both doors of cab.
2. At right rear of cab remove safety chain hook, then
pull lower end of hold-down catch release lever
from spring catch attached to cab.
3. While holding safety catch release rod to the right,
raise hold-down release lever upward until hold-
down catch becomes disengaged and rear of cab
raises from mount. Tilt cab completely forward
until check link at right front mounting, locks cab
safely in full-tilt position.
To Lower Cab
(Refer to Figure 91)
NOTE: Before lowering cab to operating posi­
tion, make sure transmission shift lever is in
neutral position and hand brake lever is in the
applied position.
1. Release check link at right front mounting (see inset
view) by pulling rearward on link release rod then
pull cab back to operating position.
2. Safety catch at rear of cab will automatically become
engaged. Pull downward on hold-down release lever
and engage lower end of lever in lever spring catch,
bracket-mounted to rear of cab.
3. Replace safety hook through matching holes in clip
bracket
underside.
CAUTION:
torsion bar bracket cap retaining set screws be
loosened with cab in either position. Whenever
loosening or removing the cap retaining set
screws for any reason, the cab must be tilted
only to the point where the torsion bar is un­
loaded. When torsion bar is inoperative, cab
must be safely supported.

Adjustment

The tilting mechanism incorporates a feature which
permits adjustment of the torsion bar as required for
proper counter-balancing of the cab during the tilting
procedure. Tension of the bar may be changed by mov­
ing the adjustment lever (fig. 92, view A). The cab must
be tilted to approximately 45° and supported before ad­
justments are made. Torsion bar must be unloaded.
Lever may be adjusted up or down as required to allow
Connect
cab rear sill to be
member when cab is in normal unlatched position. See
View B, Figure 92.

Torsion Bar

NOTE:
carried out only after cab is tilted (approxi­
mately 45 degrees) and supported safely there
with weight removed from chassis.
must be unloaded.
Refer to Figure 92 for all models.
Removal
1. Remove nut from adjusting lever clamping bolt and
pull lever off end of torsion bar.
2. Remove two bolts retaining cap to left body bracket.
3. Remove clamp bolt from right hand body bracket.
and lug on lever, starting hook from
Under no circumstances should the
" " above cab rear support cross­
6 1
±
The following instructions are to be
Fig. 91 - T ilt Cab Latch Mechanism
CHEVROLET TRUCK SERVICE MANUAL
Torsion bar