Category Archives: IH Service Letter

A compilation of “IHC Service Letters” from years gone by.

MOTOR TRUCK SERVICE LETTER #SL90

September 30,1958 SL 90 Subject File – Bodies, Cabs and Cowls Cab Door Reinforcement. A, AC, ACF, ACO and ACD Models. Where flexing of the cab door upper half is encountered to the extent that proper sealing is not maintained, … Continue reading

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MOTOR TRUCK SERVICE LETTER #SL 91

September 30,1958  SL 91 Subject File—Wheels, Tires Head Size of Tire Carrier Lock Plate  Clamp Bolt Changed from 3/4" and/or 13/l6"to 7/8". A-120, A-120 4×4. Fleet Service News Letter No. 4 dated January 10, 1958, announced that the spare tire … Continue reading

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MOTOR TRUCK SERVICE LETER #SL 89

September 19, I958 SL 89 Subject File-Transmissions Dual Range Automatic Transmission T—27 All A—100 to AC-150 and Metro Model Trucks. The new T-27 Transmission is now in production in the models listed in the heading. New features of this transmission … Continue reading

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MOTOR TRUCK SERVICE LETTER #SL 88

September 18, 1958 SL 88 Subject File – Clutch Clutch Pedal and Control Linkage Improved on A-100 to AC-1890 Chassis. Since the initial release of A-Line vehicles, various improvements have been made to the clutch pedal linkage and clutch control … Continue reading

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MOTOR TRUCK SERVICE LETTER #SL 87

September I9, 1958  SL87 Subject File — Engines Full Flow Oil Filter Assembly With Paper Type Cartridge, Replacing Partial Flow Oil Filter Assembly With Sock Type Cartridge.  Production and Service BD-282, 308 Engines.  Service Only BD-269 Engines. A full flow … Continue reading

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Motor Truck Service Letter #SL-86

MOTOR TRUCK SERVICE LETTER #SL-86 September 11, 1958 Subject File —Clutch Adjustable Clutch Pedal Stop and Heavier Pedal Stop Retainer Now Utilized on ACF 195D, 205, and ACZZSD Chassis. The present clutch pedal stop and stop retainer has been replaced … Continue reading

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MOTOR TRUCK SERVICE LETTER #SL 85

MOTOR TRUCK  SERVICE LETTER #SL 85 September 11, 1958 Subject File — Frames Stirrup Type Front Bumper Steps Added to AC=-l5O Through AC-l89O Chassis. Stirrup type front bumper steps made from l/4 thick sheet steel have been installed on the … Continue reading

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MOTOR TRUCK SERVICE LETTER #SL 51

MOTOR TRUCK  SERVICE LETTER #SL 51 September 24, 1958 Subject File — Engine Fan Belt Slippage Overcome by Use of  Cog Type Fan Belt. A-100 Through A-160 and Metro Chassis Equipped With 35 AMP Charge at idle Generators. A cog … Continue reading

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