Engine Block Heater - Installation and Labor Time
REF. NO. MBNA 20/16aTO: ALL MERCEDES-BENZ PASSENGER CAR DEALERS
DATE: February 1997 (supersedes S.l. MBNA 20/16, August 1994)
Revision:
Updated to include model 202.023.
SUBJECT: MODELS 202.O22/023 SUBSEQUENT INSTALLATION OF ENGINE BLOCK HEATER
An engine block heater is now available for the above-listed models. The attached Work Instructions no. 319A describes the installation of the block heater.
Note:
Customers should be advised that installation of a block heater in these models is at the customer's expense. Due to the complexity of the installation in this model flat rate time is 5.2 hrs.
Group: 20
Number: 319A
Date: February 1997 (supersedes W.l. 319, August 1994)
Work Instructions
Revision:
Updated to include model 202.023
SUBJECT: MODELS 202.O22/O23
SUBSEQUENT INSTALLATION OF ENGINE BLOCK HEATER
1. Disconnect and cover battery negative terminal.
2. Remove lower engine panel.
3. Drain engine coolant by first attaching a 14 mm inner diameter, 1500 mm long hose to the drain plug in the engine block and then loosening the plug. Drain coolant into a suitable container for reuse later.
4 Remove starter.
5. Remove cruise control actuator (SMS, Job no. 30-541).
6. Remove intake manifold (model 202.022 refer to SMS, Job no. ARO9.20-1310G; model 202.023 refer to SMS, Job No. ARO9.20-131OGA).
7. Remove core plug (on left side of crankcase) with a 22 mm 6-point socket (1, Figure 1)
8. Install block heater (arrow, Figure 2) using rubber 0-ring from the installation kit and not the alloy washer supplied. Tighten block heater with a 46 mm socket.
Tightening torque: 70 Nm
7. Attach electrical cable to block heater.
8. Route cable forward along the transmission oil cooler line using cable ties (arrows, Figure 3).
9. Reinstall cruise control actuator.
10. Replace intake manifold gasket, reinstall intake manifold.
11. Route cable plug to a convenient location as per customer preference. Secure cable and plug with cable ties.
Note:
Ensure that cable is routed away from moving engine parts and sources of high heat.
12. Reinstall starter.
13. Reinstall lower engine panel.
14. Reconnect battery.
15. Close coolant drain plug.
Tightening torque: 30 Nm
16. Test coolant for sufficient antifreeze protection, refill and bleed cooling system. Pressure test system for leaks (Figure 4).
17. Run engine. Check for proper coolant level.
Parts Information
Oty. Part Name Part Number
1 Block heater kit 808 200 00 96
1 Intake manifold gasket 111 141 05 80 (model 202022)
111 141 12 80 (model 202023)
As needed Cable tie Local purchase
Suggested Time Allowance Information
Note:
The subsequent installation of a block healer in the model listed below is at the customer's expense.
Operation: Block heater, subsequent installation
Operation Number Time Model Indicator(s)
20 5480 5.2hrs C1/C4