ENGINE BLOCK HEATER INSTALLATION INSTRUCTIONS
Contents
1. hii NISSAN NORTH AMERICA INC Copyright SERVICE BULLETIN Classification EM90 007 Reference NTB90 086 Date October 25 1990 ENGINE BLOCK HEATER INSTALLATION INSTRUCTIONS APPLIED VEHICLE S SERVICE INFORMATION All Models This Bulletin contains the engine block heater installation procedures for the following kits Description Engine Block Heater Kit Engine Block Heater Kit Engine Block Heater Kit Engine lower hose Heater Kit Part Number 999M4 YA002 APPLICATION Sentra NX 2000 KIT CONTENTS Item No Qty 4 4 4 TOOLS REQUIRED Phillips tip screwdriver 10mm socket and ratchet 12mm Hex bit w universal joint and extension ENGINE TYPE YEAR SR20DE 1991 amp later Part Number 999M4 YA002 99998 10282CA 999M1 49000 99998 1024701 LOCATION Rear side of the engine Threaded freeze plug on right side of starter motor Fig 1 ltem Engine block heater assembly Gasket Power cord Power cord end protector cap Tie wrap Installation Instructions 24mm combination wrench 24mm socket Torque wrench Cutting pliers 1 10 INSTALLATION PRECAUTIONS NOTES Be careful not to damage engine block threads when removing freeze plug or installing block heater Handle engine block heater with care to avoid damaging the threads Do not over torque engine block heater Ensure that power cord doesn t contact exhaust pipes2. securing the front grille to the radiator core support Secure cord to vertical member of front grille with a tie wrap Figure 4 CAUTION Make sure that power cord is not routed close to or touching any of the vehicle s moving parts or hot surfaces Power Cord Drive Shaft Exhaust J Front Looking from Under the Vehicle Sentra NX Figure 2 3 10 Front Grille Opening Behind High Pressure Headlamp Hose Compressor Engine Block A C high pressure Ear hese NX Sentra Figure 3 Figure 4 6 Refill cooling system pressurize to radiator cap relief pressure and check for leaks Operate engine to check further for leaks Refer to manufacturer s Service Manual Engine Cooling System section NOTE It is recommended that low phosphate anti freeze be used and that a maximum anti freeze water mixture ratio of 50 50 be used Refer to Nissan Owner s Manual Engine Cooling System section 7 Reinstall engine undercover 8 Use cable end protector cap when heater is not plugged into power source 4 10 Part Number 99998 10282CA APPLICATION DIRECTION VG30DE amp later from the rear VG30ET 1 amp later from driver side amp later from the rear amp later from driver side amp later from driver side Sentra Pulsar Rear side first plug 8 o clock from passenger side Sentra Front side first plug 10 o clock Pulsar NX GA16DE 3 amp later from passenger side CA18DE
3. sharp edges or vehicle moving parts Torque removed vehicle parts to proper specifications Left side Right side Inline Tranverse ENGINE INSTALLATION Figure 1 PROCEDURE 1 2 Remove engine undercover on right side only After the engine coolant and engine components have cooled down drain engine coolant from radiator and remove threaded freeze plug For plug location refer to application chart on page 1 Apply a thin layer of gasket sealant Nissan P N 999MP A7007 on both sides of the gasket Slide it over the engine block heater threads Install engine block heater to engine block being careful not to damage the threads Torque heater to 32 4 ft lb 4 5 0 5 kg m 2 10 5 Connect power cord to engine block heater and route cord as follows A From engine block heater route cord down between drive shaft and engine block toward front of the vehicle between exhaust pipe and engine oil pan Figure 2 Attach cord to engine block ear on left side of compressor with a tie wrap Continue routing cord along the left side of the compressor and attach it to the compressor high pressure hose rubber portion with a tie wrap NX Route cord under radiator core support and out to the front of the vehicle through right side opening of front lower grille Secure cord to grille with tie wrap Figure 3 Sentra Route cord up and toward the right through the opening behind right head lamp between the two legs
4. Nissan Owner s Manual Engine Cooling System section 10 Check all hose connections for leaks Tighten clamps if necessary Reinstall engine undercover 11 Use cable end protector cap when heater is not plugged into power source 2005 RADIATOR ENGINE TO ENGINE REMOVE THIS PORTION OF 15 INCHES LOWER RADIATOR HOSE LOWER RADIATOR HOSE LOWER HOSE HEATER ROMER EERE 1 INCHES TO RADIATOR VIEW FROM RIGHT SIDE OF VEHICLE RADIATOR LOWER HOSE Figure 5 Figure 6 9 10 UPPER RADIATOR HOSE STANZA RADIATOR ENGINE LOWER HOSE HEATER LOWER RADIATOR HOSE POWER CORD VIEW FROM LEFT SIDE OF VEHICLE TO ENGINE REMOVE THIS PORTION Oru LOWER RADIATOR 3 4 Nene TO RADIATOR RADIATOR LOWER HOSE Figure 7 Baek TRUCK PATHFINDER VG30 Engine UPPER RADIATOR RADIATOR MARK HERE TO ENGINE LOWER HOSE HEATER THis VIEW FROM RIGHT SIDE OF VEHICLE LOWER RADIATOR HOSE RADIATOR HOSE ta TO 1 INCH RADIATOR LOWER HOSE Figure 9 Figure 10 TRUCK KA24E Engine 4 Cyl 4WD A CORD LOWER HOSE HEATER VIEW FROM RIGHT SIDE OF VEHICLE Figure 11 10 10 REMOVE THIS PORTION GF LOWER RADIATOR HOSE t INCH TO RADIATOR Figure 12
5. acked or softened replace it If it is in good condition proceed to Step 2 2 Working from underneath the vehicle remove the engine undercover and set it aside 3 Drain coolant from the engine by opening the drain plug on the bottom of the radiator 4 Loosen the clamps at both ends of the lower radiator hose Observe how the hose fits and its shape as installed in the vehicle Mark the engine end of the hose with tape or chalk Remove the hose from the vehicle Stanza remove end of hose connected to radiator only 5 200SX Refer to Figures 5 and 6 Measure 15 inches from the engine end of the hose and make a mark From this mark measure 1 1 2 towards the radiator end and mark Fig 6 Using these two marks cut a 1 1 2 section from the hose Be sure the cut piece is on a straight section of hose and try to keep the hose in its original shape STANZA Refer to Figures 7 and 8 Mark hose in the middle of lower section of hose inclined at a 45 angle Fig 8 From this mark measure 3 8 toward the radiator end and toward the engine end and mark both places Using the last two marks cut a 3 4 section from the hose Be sure the cut piece is on a straight section of hose and try to keep the hose in its original shape Truck Pathfinder Refer to Figures 9 and 10 Mark hose in the middle of straight section of hose connected to the engine Fig 10 From this mark measure 3 8 to 1 2 toward the radiator end and toward the engine end and m
6. amp later from driver side PROCEDURE 1 Remove exhaust pipe heat shield and steering column lower joint assembly for access to indicated freeze plug Remove section of exhaust pipe connected to turbocharger if necessary 2 Remove front section of exhaust pipe for access to indicated freeze plug 3 Remove alternator for access to indicated freeze plug KIT CONTENTS Item No Qty Item 1 1 Heater assembly 2 1 Power cord 3 1 Power cord end protector cap 4 3 Tie wrap 5 1 Installation Instructions TOOLS REQUIRED Center punch Combination pliers Hammer 4mm hex wrench Needle nose pliers Flat blade screwdriver INSTALLATION PRECAUTIONS NOTES e Do not over torque engine block heater e Ensure that power cord doesn t contact exhaust pipes sharp edges or vehicle moving parts e Torque removed vehicle parts to proper specifications refer to appropriate Nissan Service Manual 5 10 Part Number 99M1 49000 APPLICATION DIRECTION 240SX Driver side of the engine first 12 o clock amp later plug from the rear Axxess Front side of the engine first 12 o clock Stanza amp later plug from the driver side Truck 1 Driver side of the engine first 12 o clock 4cyl 2WD amp later plug from the rear 1 Remove section of exhaust pipe in front of indicated freeze plug to facilitate block heater installation KIT CONTENTS Item No Qty ltem 1 1 Heater assembly 2 1 Power cord 3 1 Power cord end protector cap 4 3 Tie wrap 5 1 In
7. ark both places Using the last two marks cut a 3 4 to 1 section from the hose Be sure the cut piece is on a straight section of hose and try to keep the hose in its original shape Truck KA24E Refer to Figures 11 and 12 Mark hose in the middle of lower half of the straight section inclined portion of hose Fig 12 From this mark measure 1 2 toward radiator end and toward the engine end and mark both places Using the last two marks cut a 1 section from the hose Be sure the cut piece is on a straight section of hose and try to keep the hose in its original shape 8 10 6 Insert the lower hose heater into the cut ends of the hose see appropriate drawing Slide a hose clamp provided in the kit over the hose on each end and tighten over the lower hose heater Again try to keep the hose in its original shape NOTE Do not remove electrical cord from heater Reinstall the lower radiator hose with lower hose heater into the vehicle using the original clamps Tighten all clamps Make sure that the hose is installed in its original position Route cord out around the radiator Use plastic tie wraps to hold the wire away from hot or moving parts Refill radiator with coolant fluid Start engine and run to expel any air trapped in the system Check coolant level and add if required NOTE It is recommended that low phosphate anti freeze be used and that a maximum anti freeze water mixture ratio of 50 50 be used Refer to the
8. ipes engine components or moving parts 7 Refill cooling system pressurize to radiator cap relief pressure and check for leaks Operate engine to check further for leaks Refer to manufacturer s Service Manual Engine Cooling System section NOTE It is recommended that low phosphate anti freeze be used and that a maximum anti freeze water mixture ratio of 50 50 be used Refer to the Nissan Owner s Manual Engine Cooling System section 8 Use cable end protector cap when heater is not plugged into power source WARNING Before connecting heater to power source make sure that cooling system is filled with recommended coolant See appropriate Service Manual Left side Right side Inline Tranverse ENGINE INSTALLATION ENGINE LOWER HOSE HEATER INSTALLATION INSTRUCTIONS Part Number 99998 1024701 APPLICATION MODEL LOCATION 200SX Lower radiator hose CA20E Stanza Sedan Lower radiator hose Truck Lower radiator hose Pathfinder Lower radiator hose Truck 4Cyl 4WD Lower radiator hose 7 10 KIT CONTENTS Item No 1 2 TOOLS REQUIRED Phillips screwdriver Flat blade screwdriver Heavy duty utility knife Qty Item 1 Lower radiator hose heater with power cord and plug cap 2 Hose clamp Masking tape or chalk Electrical tape or wire tie plastic or wire Measuring tape or ruler PROCEDURE 1 Check the condition of the vehicle s lower radiator hose See Figures 5 7 9 and 11 for identification If hose is cr
9. stallation Instructions TOOLS REQUIRED Center punch Combination pliers Hammer 4mm hex wrench Needle nose pliers Flat blade screwdriver ENGINE BLOCK HEATER ADAPTER STAINLESS BAR CLAMP YOKE PROCEDURE 1 Drain coolant and remove specified core plug Do not use a screw type freeze plug puller or similar tool to remove the plug as it may cause damage to the engine block Remove freeze plug by positioning a flat blade screwdriver against the plug s recessed area and hammering it repeatedly with very short strokes until the freeze plug is loosened and turns Do not hammer freeze plug on the edges as this could damage engine block Then remove plug with needle nose or combination pliers 2 Thoroughly clean core plug hole removing any burrs compound paint or rough spots If necessary use fine emery paper being careful not to score surface 6 10 Apply a coating of grease to the heater ring and machined surface of the engine block hole to facilitate installation and prevent O ring damage NOTE DO NOT USE GASKET GLUE it hardens preventing proper seal and eventually causes leaks 4 Refer to element direction shown in chart Insert heater with element pointing in proper direction and push flush to block 5 Tighten screw to 14 19 in lb 6 Install the power cord and route it to the front grille taping it and securing it with plastic tie wraps where necessary to insure that the cord does not touch any hot p
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