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Unread 06-20-2012, 09:21 AM   #1
bill-pat
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Join Date: Oct 2010
Location: LA
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Question About Transmission Replacment

Turns out my transmission needs to be replaced on my 2007 Patriot.
Thankfully it is still covered by the drive-train warranty.

The question I have is this:
When replacing the transmission does the front differential (PTU) loose it's oil?
Will the dealer add new fluid or do I have to ask and pay for the new fluid?

Thanks for any input.

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Unread 06-22-2012, 05:14 AM   #2
Gramps
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Location: Madison/Janesville, Wisconsin
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The simple answer is YES the fluid has to be replaced but should be part of the labor but the fluid may or may not be included. Since this is a warrant I think the fluid should be but that's just my opinion.

REMOVAL

1. Disconnect negative battery cable.
2. Remove the engine trim cover.
3. Remove air cleaner assembly.
4. Remove Power Distribution Center (PDC) from bracket.
5. Raise the vehicle on the hoist.
6. Remove front halfshafts.
7. Remove drain plug at PTU and allow fluid to drain.
8. Reinstall drain plug.
9. Mark prop shaft and differential for proper installation.
10. Remove the rear prop shaft.
11. Remove the two exhaust to maniverter (exhaust manifold with catalytic converter) bolts.
12. Unplug the downstream O2 sensor connector.
13. Remove the exhaust system .
14. Lower the vehicle on the hoist.
15. Unplug the upstream O2 sensor connector.
16. Remove upstream O2 sensor from the maniverter (exhaust manifold with catalytic converter) using O2s (Oxygen Sensor) Remover/Installer 8439.
17. Remove the four maniverter heat shield bolts.
18. Remove the two retaining bolts and one nut from the maniverter side heat shield.
19. Remove the seven maniverter to head retaining bolts.
20. Slide the maniverter up and to the right, support the maniverter with the help of a bungie cord.
21. Raise the vehicle on the hoist.
22. Remove the four engine to maniverter bracket bolts.
23. Remove the rear engine mount through bolt.
24. Remove the three front engine mount to frame bolts and the mount through bolt.
25. Remove the six PTU mounting bolts, three on the bottom and three on the top.
26. Install a screw jack on front engine mount bracket.
27. Raise the front of the engine until the rear mount has dropped.
28. Separate the PTU from the transaxle.
29. Remove and discard old O-ring between Transmission and PTU.
30. Roll the PTU forward and down to remove.
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Unread 06-23-2012, 09:05 PM   #3
bill-pat
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Posts: 24
Quote:
Originally Posted by Gramps View Post
The simple answer is YES the fluid has to be replaced but should be part of the labor but the fluid may or may not be included. Since this is a warrant I think the fluid should be but that's just my opinion.

REMOVAL

1. Disconnect negative battery cable.
2. Remove the engine trim cover.
3. Remove air cleaner assembly.
4. Remove Power Distribution Center (PDC) from bracket.
5. Raise the vehicle on the hoist.
6. Remove front halfshafts.
7. Remove drain plug at PTU and allow fluid to drain.
8. Reinstall drain plug.
9. Mark prop shaft and differential for proper installation.
10. Remove the rear prop shaft.
11. Remove the two exhaust to maniverter (exhaust manifold with catalytic converter) bolts.
12. Unplug the downstream O2 sensor connector.
13. Remove the exhaust system .
14. Lower the vehicle on the hoist.
15. Unplug the upstream O2 sensor connector.
16. Remove upstream O2 sensor from the maniverter (exhaust manifold with catalytic converter) using O2s (Oxygen Sensor) Remover/Installer 8439.
17. Remove the four maniverter heat shield bolts.
18. Remove the two retaining bolts and one nut from the maniverter side heat shield.
19. Remove the seven maniverter to head retaining bolts.
20. Slide the maniverter up and to the right, support the maniverter with the help of a bungie cord.
21. Raise the vehicle on the hoist.
22. Remove the four engine to maniverter bracket bolts.
23. Remove the rear engine mount through bolt.
24. Remove the three front engine mount to frame bolts and the mount through bolt.
25. Remove the six PTU mounting bolts, three on the bottom and three on the top.
26. Install a screw jack on front engine mount bracket.
27. Raise the front of the engine until the rear mount has dropped.
28. Separate the PTU from the transaxle.
29. Remove and discard old O-ring between Transmission and PTU.
30. Roll the PTU forward and down to remove.
Thanks Gramps!
As always your answers are excellent.

So in order to change the transmission the PTU must be removed and to do that they have to drain the fluid and replace it with new fluid when they reinstall.
This makes one less item I need to do on my Patriot.
I plan on doing the rear diff myself.
If they were more reasonable I would have them do it while it's in for the transmission.
The dealer wants a whopping $165.00 plus tax to do it.
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Unread 06-25-2012, 06:11 AM   #4
Gramps
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Join Date: Aug 2006
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Posts: 5,623
Dealerships are never the least expensive but the mechanics should be well versed in what they are doing. Still, changing fluids should only take the IQ of a politician.
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MK Skid Plate fasteners for sale posts 68 & 69

Also visit me at Photobucket
'06 WK Grand Cherokee Limited Quadra-Drive II, 5.7
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Unread 06-26-2012, 04:20 PM   #5
dirkdiggler106
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Posts: 272
Quote:
Originally Posted by Gramps View Post
Still, changing fluids should only take the IQ of a politician.
That there is a good one!
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