WATER PUMP DIY FOR – 2007 TOYOTA TUNDRA DC 4X4 LIMITED.
List of tools needed
1. 10mm, 12mm, 14mm short/deep sockets and wrench.
2. 10 mm, 12mm, 14mm, offset wrench.
3. Socket extension various sizes.
4. Long Breaker bar for removing serpentine belt.
5. Torque Wrench a must.
6. Extendable magnet and mirror.
7. Channel lock plier, plier, nose pliers, hose remover tool.
8. Grip lock plier as backup for rounded nuts or bolts.
9. Safety glasses and gloves.
10. Some sort of white light.
11. Floor Jack.
12. Patience …. lots of it. Read the instructors before indulging into the job.
Parts needed.
13. New water pump kit which includes pump gasket and thermostat housing gasket to
pump.
14. Toyota super long life pre-diluted coolant (3 gallons).
New Pump
3 Gallons
Needed
Old Pump
Removal procedure. Objective is to remove fan shroud, radiator, water bypass pipe(from
oil filter cooler to the water pump), disconnect bunch of hoses to access the water pump.
15. Remove skid plate using 10mm and 12mm sockets.
16. Wait for engine to be cold then drain coolant. Loosen plastic drain cock plug to drain
coolant into container. I used 5 gallon bucket to catch the coolant.
17. Pop the hood, disconnect negative battery terminal using 10mm wrench.
18. Remove V-bank cover assembly.
19. Loosen (2) clamps for the “Air Cleaner Hose (ACH)” assembly (Torque Spec for clamps
bolts is 4 N-m).
20. Disconnect the “Ventilation Hose” from back. Flip ACH and let it rest on the v-bank.
21. Using channel plier slide the radiator inlet hose clamp to the remove the hose (located
on the driver side at the top of the radiator). Be prepared to the catch the coolant in the
container.
22. Using channel plier slide the radiator outlet hose clamp to remove the hose (located on
the passenger side at the bottom of the radiator). Be prepared to the catch the coolant in
the container.
23. Remove 12mm (3) bolts holding the oil cooler (torque spec for these is 14N-m).
(2)
24. Remove the top bracket of the oil cooler and swing it out of the way to access the
radiator frame bolts.
25. Remove 12mm (4) bolts holding the radiator assembly. You will need deep socket and
long extensions (Torque spec on these bolts is 18N-m).
(4)
26. Remove the fan shroud bolts using 10mm socket.
(2)
27. Remove (2) each side radiator bracket bolts. Need a friend or partner to hold the radiator
so it does not fall.
28. Disconnect reservoir hose from radiator. Unclip the oil cooler hose bracket from fan
shroud on the passenger side. At this time all the hoses connected to the radiator should
be disconnected.
29. Pull the radiator up and by flexing the fan shroud out of the way at bottom.
30. Remove the serpentine belt by turning the belt tensioner.
31. Remove water bypass hose and hose connections from each end (except the circled
one shown below. It has (3) 10mm bolts. See next note as well.
Bracket near AC
compressor
To oil filter
cooler
32. Bracket mounting shown above in picture is accessed by removing fasteners of AC
compressor unit and sliding it out (don’t have to remove the AC compressor completely).
This gives you access to remove the water bypass hose. Note: That water bypass hose
(metal) is removed with the water hose (black rubber) still attached. AC compressor is
access by removing the mud shield on the driver side wheel well.
33. Remove air hoses (2) by sliding the clips with plier. Remove the white plastic hose tie.
34. Remove wiring harness plugs and zip tie inserts.
35. Remove the air tube bracket 10mm bolt.
36. Remove (3) 12mm bolts holding water inlet housing attached to the pump.
37. Remove water pump pulley 12mm (4) bolts. Use the pulley holder or flat head screw
driver between two bolts to keep the pulley from spinning. I used air gun to remove these
bolts.
38. Remove (3) 12 mm bolts holding the inlet housing to the water pump. Now keep track of
bolts sizes and locations. Move the housing away from the pump to access the water
pump.
39. Remove water pump assembly (5)12 mm bolts [Torque 20 N-m], (1) long 12mm bolt
[Torque 23 N-m] and (2) 14mm bolts [Torque 47N-m].
Interval – Take a break, if you did not take one until now.
40. Clean the water pump mating surface with clean cloth or paper towel. Install new gasket
and water pump now. Remember to install the new pump not the old one (ha ha….)
Thread the bolts in by hand. Torque the bolts as mentioned in previous step that are
color coded.
41. Install the new large O-ring gasket on the pump for the inlet housing and install the (3)
12mm bolts [Torque 20 N-m]
42. Now it is easy. Button everything up in reverse order of removal. Take your time and pay
close attention to hose clamp because if you don’t it might interfere with serpentine
belt.
43. Install bypass hose (3) 10 mm bolts and connect all hoses.
44. Install AC compressor bolts [Torque 25 N-m].
45. Install water pump pulley (4) 12mm bolts [Torque 21 N-m].
46. Install fan coupler with (4) 12mm nuts [Torque 21 N-m].
47. Install Serpentine belt, inspect it does not rub against anything (hose clamps, etc).
48. Rest fan shroud on the fan,
49. With the help of a friend, slide the radiator in and fasten all nuts/bolts.
50. Attach fan shroud to the radiator.
51. Connect all remaining hoses and electrical connections that were disconnected.
52. Check all hose clamp and tighten them by spread clamps apart by the plier.
53. Attach the ACH, tighten the clamps and connect all hoses/clamps.
54. Install cock plug to the radiator.
55. Connect all of hoses at bottom of radiator.
56. If all hoses are connected by now, begin filling the radiator with new coolant. (use funnel
to avoid spills). Pour the coolant slowly to let the system air out at the same time.
57. Fill the coolant reservoir if it was emptied.
58. Install Cap. Remove all the tools from engine compartment and ready to start the motor.
59. Fire the motor and run to check for any leaks. Turn the heater to full high and let the
system purge its air. Monitor coolant level after engine is completely cool down.
Replenish coolant as necessary directly in radiator.
60. Listen for any unordinary sounds due to repairs. If there is anything diagnose and trace
your steps and fix the issue. You may go for a test drive.
61. If everything is ok. Install Skid plate.
Knock on wood. Nothing is leaking.
More pictures.