PRODUCT SUPPORT PROGRAM FOR MOVING THE HEATER RETURN LINE ON CERTAIN C9 TRUCK ENGINES Caterpillar

PRODUCT SUPPORT PROGRAM FOR MOVING THE HEATER RETURN LINE ON CERTAIN C9 TRUCK ENGINES

Usage:

SEBE9137

April 11, 2005
U-113
TT-4

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*before or* *after failure*	PRODUCT SUPPORT PROGRAM FOR MOVING THE HEATER RETURN LINE ON CERTAIN C9 TRUCK ENGINES
1355		PS41792

NOTE: This Program can be administered either before or after failure. In either case the decision whether to apply the Program is made by the dealer. When reporting the repair, use "PS41792" as the Part number and "7755" as the Group Number. If administered before failure, use "56" as the Warranty Claim Description Code and use "T" as the SIMS Description Code. If administered after failure, use "96" as the Warranty Claim Description Code and use "Z" as the SIMS Description Code.

NOTE: The information supplied in this service letter may not be valid after the termination date of this program. Do not perform the work outlined in this Service Letter after the termination date without first contacting your Caterpillar product analyst.

TERMINATION DATE

April 30, 2007

PROBLEM

Country Coach Motor Homes have low/no heat from cab heater. Cab heater return line needs to be moved from thermostat housing to water pump inlet to increase flow to cab heater.

AFFECTED PRODUCT

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Model

Identification Number

9DG1070-1077, 1086-1088, 1090-1091, 1097, 1101-1103, 1106-1108, 1111-1114, 1116, 1118-1123, 1125, 1183, 1185, 1188-1189, 1192, 1195, 1199-1200, 1203-1205, 1207, 1215, 1231-1232, 1234-1235, 1237-1238, 1242, 1244-1246, 1248-1250, 1266, 1268, 1272, 1274-1276, 1280, 1283, 1285, 1287, 1291, 1293-1294, 1325, 1328-1329, 1331, 1333-1339, 1341, 1345, 1347-1348, 1432-1440, 1451, 1453, 1457, 1464-1466, 1468-1469, 1471, 1474, 1478, 1480, 1512, 1515, 1520, 1522, 1526, 1531-1532, 1534-1535, 1540, 1542-1543, 1545, 1554-1555, 1559, 1561-1563, 1567, 1624-1626, 1633-1635, 1647, 1649-1650, 1660-1661, 1666-1667, 1673, 1676, 1678-1679, 1682, 1684, 1686-1687, 1689, 1691-1700, 1702, 1732-1733, 1741, 1747-1748, 1750-1751, 1760-1763, 1770, 1773, 1776, 1780, 1785-1786, 1789, 1797, 1802, 1804-1805, 1807-1808, 1816-1817, 1819, 1825, 1829-1834, 1836, 1839, 1844-1848, 1851, 1854, 1856-1859, 1896-1899, 1907-1917, 1919-1924, 1928-1932, 1934-1938, 1940, 1942, 1962, 1968, 1973, 1975, 1982, 1987, 1993, 2019, 2021, 2030, 2036, 2043, 2049, 2051, 2060, 2064-2065, 2069, 2086, 2101, 2109, 2111-2112, 2119, 2125-2127, 2189-2190, 2195, 2199, 2202, 2206, 2212-2213, 2219, 2222, 2230, 2235, 2241-2242, 2247, 2249-2251, 2254, 2257, 2264, 2275, 2301, 2329-2330, 2346, 2353, 2356-2357, 2359, 2362, 2365, 2369-2371, 2373, 2375, 2379, 2384-2385, 2388, 2392, 2394, 2454, 2462, 2473, 2481, 2538, 2541-2542, 2547, 2552, 2557, 2565-2568, 2580, 2597, 2599, 2609-2612, 2614-2616, 2619-2620, 2629, 2631-2633, 2635, 2638, 2643, 2646-2648, 2675, 2693-2694, 2699-2700, 2707, 2710, 2721, 2730, 2742, 2753, 2764, 2767, 2769, 2777, 2786-2787, 2791, 2794-2795, 2804, 2818, 2820, 2822-2824, 2826-2829, 2834, 2836, 2863, 2865, 2871, 2873, 2878, 2891-2892, 2895, 2899, 2901, 2904, 2908, 2910, 2920, 2926, 2933, 2935, 2938, 2950, 2963-2965, 2969, 2971, 2982, 2991-2993, 3023, 3036, 3044, 3048, 3053, 3057, 3059, 3065, 3069, 3074, 3095, 3101-3102, 3104-3105, 3109, 3114, 3119, 3124, 3135, 3243, 3259, 3262, 3266-3267, 3270-3273, 3275, 3277, 3279, 3281-3282, 3284-3285, 3288, 3291, 3295-3296, 3302

ACTION REQUIRED

Remove cab heater coolant return line and fitting from thermostat housing. Install fitting and hose into the water pump inlet. See instructions and pictures below for repair procedures.

SERVICE CLAIM ALLOWANCES

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Product smu/age whichever comes first	Caterpillar		Dealer Suggested		Customer Suggested
Product smu/age whichever comes first	Parts	Labor Hrs	Parts	Labor Hrs	Parts	Labor Hrs
0-24 mo	100%	2.0	0	0	0	0
NOTE: This is a 2.0 hr job.

PARTS DISPOSITION

Handle the parts in accordance with your Warranty Bulletin on warranty parts handling.

Attach. (1-Rework Procedure)

Rework Procedure

Drain Coolant

Remove coolant return line from fitting in thermostat housing.
Remove fitting from thermostat housing. (See Picture below) Country Coach has coolant return line fitting installed in location where arrow is pointing.

Illustration 1

Remove plug from water pump inlet. (See Picture below)

Illustration 2

Take plug removed from water pump inlet and install in thermostat housing where fitting was removed in step 3.

Note: Inspect O ring before installing fitting

Install fitting (previously removed in step 3 from the thermostat housing) in the water pump inlet port
Install coolant return line onto fitting installed in step 6.
Fill cooling system
Check for leaks (Repair as necessary)
Check cab heater operation