TRUCK SERVICE MANUAL TM 5-4210-230-14&P-1 BODIES AND CABS SPECIFICATIONS MOTOR TYPE Reciprocating Air MANUFACTURER Trico FREE RUNNING ARC 115 degs. STOP TO STOP 130 degs. WIPER BLADE LENGTH 36 cm (14 inches) BACK PRESSURE VALVE IH No.  478630-C1 TORQUE CHART Application Nm Ft.  Lbs. Bracket to Motor Mounting Screws 4.5-7 3-5 Motor Bracket to Cowl Mounting Bolts 27-30 20-22 Lever Arm Shaft Nut 6-7 4.5-5 Wiper Shaft Cap Nut 6-7 4.5-5 TROUBLE SHOOTING (AIR) PROBLEM PROBABLE CAUSE SOLUTION Motor will not operate. 1.  No air to motor. 1.  Unplug air line or correct leaks. 2.  Binds in wiper arm shafts 2.  Eliminate binds. or linkage. 3.  Defective control valve. 3.  Replace valve. 4.  Defective air motor. 4.  Replace motor. Motor will not shut off. Defective control valve. Replace control valve. Motor operates erratically. 1.  Exhaust port plugged. 1.  Clean port. 2.  Binds in wiper shafts or 2.  Eliminate binds. linkage. 3.  Air leak in motor. 3.  Replace motor. Wiper blade strikes wind- Blade "PARK" position Adjust "PARK" position. shield molding. out of adjustment. Motor operates but wipers Link rod loose from Secure linkage rod end do not wipe. drive lever. retainer clip. CTS-2732  Page 2 PRINTED IN UNITED STATES OF AMERICA