1994/12/19 Caterpillar


Special Instruction SEHS9734-01 Is Available For Retrofitting R-12 Air Conditioning Systems To R-134a Refrigerant {7320,1809}

Usage:


Challenger 65C (2ZJ),
Challenger 75C (4KK) Agricultural Tractors;
D20D (9MG),
D250D (6NG),
D300D (5MG),
D25D (1HK),
D30D (3AJ),
D350D (9RF),
D40D (2JJ),
D400D (8TF) Articulated Trucks;
416B (8ZK, 8SG),
426B (5YJ),
428B (7EJ),
436B (6MJ),
438B (3KK),
446B (5BL) Backhoe Loaders;
225D (2SJ),
231D (1NK),
235C (3WG, 5AF),
235D (8KJ),
245B (6MF),
245D (4LK),
350 (8HK, 9FL, 7RK, 9DK),
350 (8HK, 7RK),
350 L (9DK, 9FL),
375 (6NK, 8XG, 8WJ, 9WL, 1JM, 6RL),
375 (8WJ, 8XG, 6NK),
375 L (1JM, 6RL, 9WL),
5080 (6XK) Excavators;
120G (87V, 11W),
130G (74V);
12G (61M, 3WC),
140G (72V, 13W),
14G (96U),
16G (93U) Motor Graders;
768C (02X371-Up),
772B (64W181-Up),
776C (2TK76-Up) Tractors;
769C (01X5474-Up),
773B (63W3297-Up),
777B (4YC),
777C (4XJ77-Up),
785 (8GB118-697),
785B (6HK101-264),
789 (9ZC111-677),
789B (7EK111-230),
793 (3SJ6-56),
793B (1HL12-101) Trucks;
771C (3BJ72-Up),
775B (7XJ76-Up) Quarry Trucks;
943 (31Y, 04Z, 03Y, 19Z),
953 (76Y, 05Z, 77Y, 20Z, 78Y, 44Z),
953B (5MK1-1650),
963 (06Z, 11Z, 18Z, 21Z1-5344, 29S, 48Z),
973 (32Z, 26Z, 66G, 86G1-1555, 90L, 91L) Track-Type Loaders;
D4H (7PK1-134, 8PJ1-532, 9GJ1-944, 4NK1-146),
D5H (1YD5000-5521, 3MD5000-5593, 2SD5000-5548, 4KD5000-5584, 1DD1-6005, 7NC1-5526, 8RC1-5966, 8RJ1-4386, 9HC1-5520),
D6H (2KD4000-5617, 8FC4000-5611, 1KD4000-5599, 4YF4000-5574, 4GG4000-5631, 9RK307-Up, 8SK1-368, 7ZK1-348, 2TL1-345, 5KK1-335, 4RC1-5588, 6FC1-5541, 3ZF1-5735, 3YG1-5771, 8ZJ1-318, 9KJ1-440, 6CK1-353, 1FJ1-5541, 4LG1-5597, 5HF1-5581, 2TG1-5592, 8KK1-313, 1YL1-319, 2BL1-346, 9LK1-463, 6CF1-5564),
D7H (4AB4000-5531, 5WB4000-5585, 3XG4000-5514, 2RG4000-5621, 79Z1-5610, 80Z1-5517, 4FG1-5572, 5BF1-5689),
D8N (9TC, 1XJ, 5TJ1-1317),
D9N (1JD),
D10N (2YD),
D11N (74Z) Tractors;
816B (15Z1-1412),
826C (87X1-1699) Compactors;
910E (1SF, 1YK),
918F (3TJ, 5DL),
936F (8AJ, 9MK),
950F Series II (5SK, 8TK, 4DJ1-2075),
960F (9ZJ1-166),
966F Series II (1SL, 9YJ, 8BG1-2408),
970F (7SK1-224),
980F (8CJ),
988F (8YG),
992C (49Z),
992D (7MJ),
994 (9YF1-82) Loaders;
IT12B (1KF),
IT18F (6ZF) Integrated Toolcarriers;
613C (92X),
613C Series II (8LJ1-883),
615C (5TF),
615C Series II (9XG1-342),
621E (2PD, 6AB),
623E (6CB, 6YF),
627E (6EB, 6GB, 7CG),
631E (1NB, 1AB1-1509),
637E (1FB1-570, 1JB),
651E (89Z1-270),
657E (90Z1-222, 91Z1-452) Wheel Tractor-Scrapers;

Special Instruction, SEHS9734-01, "Retrofitting R-12 Air Conditioning Systems To R-134a Refrigerant", is available.

The Special Instruction provides the necessary information to convert the air conditioning systems that have R-12 refrigerant to the new R-134a refrigerant.

Caterpillar Information System:

1994/12/19 Spacer Plate Is Available To Make Installation Of Permanent Hose Couplings Easier {0684,5057}
1994/12/19 New Filter Used For Screed Burner And Washdown Systems {1274,5642}
1994/12/19 Primary Pressure For The Transmission Pressure Control Group Has Been Increased {0374,3150}
1994/12/19 New Screen Assembly Prevents Large Debris From Transferring Into Differential Compartment {4051,3258}
1994/12/19 Small Cracks Around The Holes In The Front Wheels Can Be Repaired By Welding {4201}
1994/12/19 New Roller Bearings Used In The 8E-9034 Transmission Planetary Group To Improve Service Life {3160}
1994/12/12 New Cylinder Blocks Made From Stronger Alloy{1201}
1994/12/12 New Exhaust Bypass Valve (Wastegate) Used In Exhaust Bypass Group{1057}
1994/12/12 Serviceable Parts For Custom Option Engine Prelube Group{1319}
1994/12/12 Injector Solenoids on Engines Equipped with EUI Are Not Polarity Sensitive{1259}
1994/12/12 Caterpillar Hose Press And Tool Usage{5057,0684}
1994/12/12 Procedure To Bleed And Charge The Rear Suspension{7213}
1994/12/19 New Connecting Rod Assembly Has Increased Fatigue Strength {1218}
1994/12/19 New Water And Oil Temperature Regulators Available {1330,1355}
1994/12/19 New Electronic Control Group (Throttle Position Sensor) Has Improved Contact Design {1913}
1994/12/26 New Engine Oil Pressure Gauge And Sender {7455}
1994/12/26 New Bearing Housing Used In Turbocharger Group {1056,1052}
1994/12/26 Information Release Memo PELE0401 Has Information About Remanufactured Hydraulic Piston Pump And Piston Motor Groups {0374,4134,4136,4351,5058,5070,5080,5314,5315,5473}
1994/12/26 New Oil Tube Clamp Assembly Is More Durable and More Resistant to Leakage {1307}
1995/01/16 Special Instruction SEHS9429-01 Available for Spherical Bearings for Bulldozers and Rippers{7551,6050,6313}
1995/01/16 Fuel Injection Pump Change{1251}
1995/01/16 R-134a Refrigerant Used For Air Conditioner Charge{1802,1805}
1995/01/16 Boom Lock Cable Tube Is Now Serviceable{5477,5063}
1995/01/16 Wheel Bearing Check And Adjustment Maintenance Interval{4208}
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