Chevrolet 70 1969 Series, Shop Manual

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STEERING 9-31
SPECIFICATIONS (CONT.)
Worm Nut Balls:
Type Gear Number Size
All 5 5 3 - D V ....................................................... 106 9/32”
PITM A N SHAFT BUSHINGS
Housing...........................
Side Cover
W O R M U P P E R BEARING
W i d t h .............................................. 0.490"-0.500"
Inside D i a m e t e r ........................ 1.4995” -1.5000"
Outside Diameter 1.8745"-1.8755"
TORSION BAR SLEEV E
W i d t h .......................................................... 0.36”
Inside D i a m e t e r ........................ 0.3795"-0.3805"
Outside Diameter ..................... 0.4882"-0.4887”
SP O O L SPRING
Free Length 0.82"
Compressed L e n g t h ............ 0.60” under 10 lbs.
Type Gear Width I.D. O.D.
. 553-DV-54 1.000” 1.3790” 1.5000”
1.3795” 1.5005”
553-DV-55 1.000" 1.3790” 1.5000"
1.3795” 1.5005”
553-DV-67 1.430" 1.5050” 1.6265”
1.440” 1.5060" 1.6270"
553-DV-70 1.430" 1.5050” 1.6265”
1.440” 1.5060" 1.6270"
. 553-DV-54 0.820" 1.1255" 1.2520”
0.850” 1.1260" 1.2535”
553-DV-55 0.820” 1.1255” 1.2520”
0.850" 1.1260” 1.2535”
553-DV-67 0.840” 1.5020" 1.6280”
1.5025” 1.6295"
553-DV-70 0.840" 1.5020" 1.6280"
1.5025" 1.6295”
T Y P E 553-DV —STEERING G EA R
STUB SHAFT BEARING
W i d t h ............................................. 0.2400” -0.2500”
Inside Diameter ........................ .. 0.3745” -0.3750”
Outside Diameter........................ .. 0.5620” -0.5630”
U P P E R THRUST BEARING
Separator Assembly
Width ........................................ 0.350"-0.365”
Inside Diam eter........................ 1.215” -1.225"
Outside D ia m e te r ..................... 1.698”-1.748”
Number of Balls ........................................ 14
STEERING G E A R ADJUSTM EN TS
THRUST BEARING P R E L O A D ...........................................1 to 3 inch-pounds in access of valve assembly drag
THRUST BEARING A D JU ST M E N T PLUS SEAL D R A G .................................................... 8 inch-pounds maximum
PITM AN SHAFT P R E L O A D .................. 4 to 8 inch-pounds in access of total bearing preload and valve drag
Final Over-Center Reading (Total of Valve and Seal
Drag, Worm Bearing preload, and Lash Adjuster prelo ad)........................................ 16 inch-pounds maximum
STEERING G E A R TO R Q U E SPECIFICATIONS H Y D R A U LIC P U M P SPECIFICATIONS
Type of Torque VA N E T Y P E P U M P
Location
Mounting (Ft.-Lbs.)
M a k e ..................
Saginaw Steering Gear Division
HOSE FITTINGS T O PORTS . .
20-30 Type ..................
.................. 235-E and 235-P
Pressure Hose U n i o n ............
10-20 M o d e l ..................
Refer to Model Application Chart
Adjuster P l u g ........................
. Lock Nut 50-110
Capacity Per Minute
Side C o v e r ..............................
. Bolt 25-35
All pump models except 235-P-47
Lash A djuster........................
. Lock Nut 25-35 Maximum . . . .
3.5 gpm of Type “ A ” automatic
Control Valve to Steering Gear . Bolt
35-45
transmission fluid at 170° F.
CHEVROLET SERIES 70-80 H EAVY DUTY TRUCK SH O P M A N U A L