Chevrolet 1977 light duty truck Service Manual page 274

S T E E R IN G G E A R R A T IO S
Manual
Vehicle
Gear Overall
Ratio
29.4:1
24:1
G 10-20
36.7:1
29.4:1
24:1
G 30
36.4:1
29.1:1
P10 24:1
35.5:1
29.1:1
24:1
P20-30
35.3:1
M o to r Hom e -
29.1:1
C 10 24:1
37.0:1
29.4:1
24:1
C20-30
36.3:1
24.6:1
24:1
K 10-20
28.0:1
Vehicle
C10-30
G 10-20
G30
P10-30
M o to r Hom e & K
SPECIFICATIONS
Power
Gear
Overall
Ratio Ratio Ratio
21.4:1
14:1
to to
26.7:1
21.4:1
to to
14:1
26.5:1
21.2:1
17.5:1 to
to
25.7:1
21.2:1
to
to 17.5:1
25.7:1
16.0:1
14:1 to
-
21.9:1
16:1 16.9:1
to
to to
20.2:1
13:1
17.2:1
16:1
to
to to
20.6:1
13:1
13.2:1
16:1
to to
to
17.2:1
13.1
P O W E R S T E E R IN G P U M P P R E S S U R E S
M A N U A L S T E E R IN G G E A R
Components G 1 0 - 3 0
C1p i 03°
Thrust Bearing 6 to 11
lbs. in.
Preload
Adjuster Plug
Lock Nut
Over Center 5 to 11
Preload lbs. in.*
Over Center
Lock Nut
Total Steering 18 lbs. in.
Gear Preload Max.
*In excess of thrust bearing preload.
P O W E R S T E E R IN G G E A R
Components
Steering Gear Ball Drag
Thrust Bearing Preload
Adjuster Plug Locknut
Over-Center Preload
Over-Center Adjusting
Screw Locknut
Total Steering Gear Preload
*In excess of ball drag.
**In excess of ball drag and thrust bearing preload.
Pressure
1200 - 1300 psi
900 - 1000 psi
1200 - 1300 psi
1200 - 1300 psi
1350 - 1450 psi
P20 - 30
K 1 0 - 2 0
4 to 6 9 to 12
lbs. in. lbs. in.
85 lbs. ft.
4 to 10 9 to 13
lbs. in.* lbs. in.*
25 lbs. ft.
14 lbs. in.
25 lbs. in.
Max.
Max.
All C, P, K and G
3 lbs. in. Max.
1/2 to 2 lbs. in.*
80 lbs. ft.
5 lbs. in.
35 lbs. ft.
14 lbs. in. Max.