Coolant Pump - Installing New Type
87porsche04Subject: Installing New Type Coolant Pump
Model 924S, 944, 944S, 944 Turbo
Group
1
Part Identifier
1950
Number
8713
June 22, 1987
A new coolant pump is installed on all 4 cylinder engines since July 1986 beginning with the following engine numbers:
43G61921 - 944 Manual transmission
924S Manual transmission
43G61921 - 944 Automatic transmission
924S Automatic transmission
43H01467 - 944 Manual transmission
924S Manual transmission
43H60310 - 944 Automatic transmission 924S Automatic transmission
42H00140 - 944S 45H00086 - 944 Turbo
This new version pump has modifications to the seals and pump body in the area of the vent bore (Arrow A). In addition, a guard rail (Arrow B) is installed and the toothed belt roller (Arrow C) is offset to guide the toothed belt.
Coolant Pump Part Numbers Old New
924S, 944, 944S 944 106 021 13 944 106 021 16
944 Turbo 951 106 021 01 951 106 021 04
Note:
951 106 021 04 will not be available for pre-1987 models until current inventory of 951 106 021 01 is depleted.
When repairing cars from start of production 1983, install the new version coolant pump. The following parts must also be ordered for use with the new version coolant pump. (The following parts may or may not come with the new pump).
1 - Guard rail - PN 944 105 213 01 - Qty. 1 2 - Lock nuts - PN 999 084 092 02 - Qty. 2
3 - Roller - PN 944 105 241 03 - Qty. 1
Roller diameter is 46.2 mm (formerly 32.0 mm)
The gasket between the coolant pump and the crankcase has not been changed.
Important:
Mark the running direction of the camshaft and balance shaft belts prior to removal to assure the same running direction on reassembly. Inspect toothed belts for wear or damage and replace if necessary.
When installing the new type coolant pump on earlier engines, the rear toothed belt cover must be modified to conform with the larger roller and new guard rail. To accomplish this, place the supplied upper and lower template inside the rear toothed belt cover and mark the opening between them. This is the material to be removed. Remove the belt cover material by grinding or filing.
Note:
The adjusting values for new and used toothed belts with previous-type idler pulley adjustment is found in Technical Bulletin Group 1, Number 8601 dated February 14, 1986. On cars with the new mechanical belt tensioner, the adjustment procedure is found in Technical Bulletin Group 1, Number 8620 dated October 17, 1986.
No other modifications are required for installation of the new type coolant pump.
Labor Operations and Times