1.13
Section 1
Safety and General Information
1
²Measure 6 mm (0.236 in.) above the bottom of the piston skirt at right angles to the piston pin.
Piston, Piston Rings, and Piston Pin cont.
Top and Center Compression Ring End Gap
New Bore - CH18, CH20, CH22 (624 cc) ...................................................... 0.25/0.45 mm (0.0098/0.0177 in.)
New Bore - CH22/23 (674 cc) ........................................................................ 0.18/0.46 mm (0.0071/0.0181 in.)
New Bore - CH25, CH26, CH730-745 .......................................................... 0.25/0.56 mm (0.0100/0.0224 in.)
Used Bore (Max.) - CH18, CH20, CH22 (624 cc) .......................................... 0.77 mm (0.030 in.)
Used Bore (Max.) - CH22/23 (674 cc) ............................................................ 0.80 mm (0.0315 in.)
Used Bore (Max.) - CH25, CH26, CH730-750 .............................................. 0.94 mm (0.037 in.)
Piston Thrust Face O.D.²
New - CH18, CH20, CH22 (624 cc) ............................................................... 76.967/76.985 mm (3.0302/3.0309 in.)
New - CH22/23 (674 cc) ................................................................................. 79.963/79.979 mm (3.1481/3.1488 in.)
New - CH25, CH26, CH730-750 ................................................................... 82.986 mm (3.2671 in.)
Max. Wear Limit - CH18, CH20, CH22 (624 cc) .......................................... 76.840 mm (3.0252 in.)
Max. Wear Limit - CH22 (674 cc) ................................................................. 79.831 mm (3.1430 in.)
Max. Wear Limit - CH25, CH26, CH730-750 .............................................. 82.841 mm (3.2614 in.)
Piston Thrust Face-to-Cylinder Bore² Running Clearance
New - CH18, CH20, CH22 (624 cc) ............................................................... 0.014/0.057 mm (0.0005/0.0022 in.)
New - CH22/23 (674 cc) ................................................................................. 0.021/0.062 mm (0.0008/0.0024 in.)
New - CH25, CH26, CH730-750 ................................................................... 0.001/0.045 mm (0.039/0.0018 in.)
Speed Control Bracket
Fastener Torque ....................................................................................................... 10.7 N·m (95 in. lb.) into new holes
7.3 N·m (65 in. lb.) into used holes
Starter Assembly
Thru Bolt Torque
UTE/Johnson Electric, Eaton (Inertia Drive) ............................................... 4.5-5.7 N·m (40-50 in. lb.)
Nippondenso (Solenoid Shift) ...................................................................... 4.5-7.5 N·m (40-84 in. lb.)
Delco-Remy (Solenoid Shift) ......................................................................... 5.6-9.0 N·m (49-79 in. lb.)
Mounting Screw Torque (All) ............................................................................... 15.3 N·m (135 in. lb.)
Brush Holder Mounting Screw Torque
Delco-Remy Starter ........................................................................................ 2.5-3.3 N·m (22-29 in. lb.)
Solenoid (Starter)
Mounting Hardware Torque
Nippondenso Starter ..................................................................................... 6.0-9.0 N·m (53-79 in. lb.)
Delco-Remy Starter ........................................................................................ 4.0-6.0 N·m (35-53 in. lb.)
Nut, Positive (+) Brush Lead Torque
Nippondenso Starter ..................................................................................... 8.0-12.0 N·m (71-106 in. lb.)
Delco-Remy Starter ........................................................................................ 8.0-11.0 N·m (71-97 in. lb.)
Stator
Mounting Screw Torque ........................................................................................ 6.2 N·m (55 in. lb.)
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