Landcruiser Gear box

Submitted: Saturday, Aug 11, 2012 at 11:53
ThreadID: 97367 Views:13546 Replies:7 FollowUps:5
This Thread has been Archived
I have a Landcruiser Standard model with the 1HZ diesel and aftermarket Turbo fitted. Serviced every 5000km from new. When the motor warms up it can at times be difficult to engage 1st and second gear from a standing start eg at the lights. No trouble when cold. No trouble other gears. Also if reversing with caravan on it can be difficult to get out of reverse unless you go backwards a little further than planned and flick out of reverse before it stops. Any suggestions much appreciated. Thanks Brian
Back Expand Un-Read 0 Moderator

Reply By: Member - Serendipity(WA) - Saturday, Aug 11, 2012 at 12:47

Saturday, Aug 11, 2012 at 12:47
Hi Brian

Not sure if this is the same but I put 80w/90 gear box oil in my landcruiser ute and it was difficult to change gears when cold and I would often miss a gear in the mornings. I checked on toyota and the correct grade of oil is 75w/85 so I changed to that oil and it is much better.

Cheers

Serendipity


Lifetime Member
My Profile  My Blog  Send Message

AnswerID: 492701

Reply By: Member - GregK5202 Qld - Saturday, Aug 11, 2012 at 13:34

Saturday, Aug 11, 2012 at 13:34
It's a while since I had my 75 series, but could it be the clutch adjustment? 1st, second and reverse don't have the same synchro as 3rd and 4th and the clutch might be dragging and not totally disengaged.

Greg.
If it is to be, then it is up to me!

GregK5202

Member
My Profile  My Position  Send Message

AnswerID: 492703

Reply By: Macca44 - Saturday, Aug 11, 2012 at 16:49

Saturday, Aug 11, 2012 at 16:49
G day Brian T It is most likely to be the clutch hanging on, could be out of adjust or dry on the spline of the gear box in put shaft . Or if there is a bad oil leak at rear main oil seal on the motor it may have oil on the clutch plate but this more likely to cause a shudder in first or rev. Regards Macca.
AnswerID: 492711

Follow Up By: Brian T - Saturday, Aug 11, 2012 at 18:10

Saturday, Aug 11, 2012 at 18:10
Many thanks for all the feedback, it gives me somewhere to start. I'll have the clutch adjustment checked out. No oil leaks at all. Appreciated. Brian
0
FollowupID: 768362

Reply By: splits - Saturday, Aug 11, 2012 at 19:31

Saturday, Aug 11, 2012 at 19:31
Make sure the seat that the gear lever ball sits in is not starting to break up. If it is it will allow the lever to sink down into the box a little resulting in the end of the lever binding in the selectors. It was a problem with the 60 series back in the days when I worked on new ones and may have carried on into later models.
AnswerID: 492721

Follow Up By: Member - Alan H (QLD) - Sunday, Aug 12, 2012 at 11:19

Sunday, Aug 12, 2012 at 11:19
Had the seat problem on an 80 series I owned. Check if all is well if you pull the lever upwards while changing. If this fixes the problem then you need the plastic seat that goes under the gear lever. easy to replace just screw the cover off the gear lever and it will come out then replace the seat with the very cheap part for fix. I think the part was 22c but that was some years ago now.

Alan
0
FollowupID: 768387

Reply By: dindy - Saturday, Aug 11, 2012 at 20:03

Saturday, Aug 11, 2012 at 20:03
Hi, bearing in mind that the landcruiser mechanism is hydraulically operated there will be no manual adjustment possible. However the problem may well be either the master or slave cylinder letting fluid bypass their seals as the oil warms up and becomes slightly thinner. The hydraulic fluid may need replacement due to moisture contamination this will also affect the operation. Any or all of these things can affect the operation of the clutch. If you know where to look see if the level of the fluid has dropped in the reservoir on the master cylinder this will indicate a leak in the system somewhere. To repair any of these reasonably inexpensive. Just because you have had the vehicle serviced every 5000k's does not mean that the clutch system has been checked. Take your vehicle to a good trustworthy mechanic who can look at it for you and give an honest opinion not a dealership who will not unsurprisingly tell you that you need a new clutch. You don't say how old the vehicle is or how many k's on the clock or what type of work it has done. This info will help people diagnose the issue for you. Visit www.lcool.org and join its free, mile of great landcruiser info there.
AnswerID: 492723

Follow Up By: Brian T - Saturday, Aug 11, 2012 at 20:19

Saturday, Aug 11, 2012 at 20:19
Cheers for this. Landcruiser is 2001 model done 195k, heavy duty clutch fitted approx 18 months ago. Will check out website. Regards Brian
0
FollowupID: 768372

Reply By: Ozhumvee - Saturday, Aug 11, 2012 at 21:16

Saturday, Aug 11, 2012 at 21:16
Also remember that the box fitted behind a 1hz in cruisers is the lighter box and a known failure point, adding the turbo and towing a van would not add to its longevity.
Peter
1996 Oka Motorhome

Member
My Profile  My Position  Send Message

AnswerID: 492726

Reply By: keepingitreal - Sunday, Aug 12, 2012 at 19:03

Sunday, Aug 12, 2012 at 19:03
As mentioned. The manual gearbox in the 1HZ 100 series is a lighter box. I had the same issues many years ago with my same vehicle ( aftermarket turbo, 1Hz). I ended up replacing the gearbox with a heavier one from a manual petrol V8. It bolted straight in with no changes needed. I also put in a heavier clutch. The only difference was a slightly lower final gear ratio which meant slightly higher revs at 100kph. Although i used my vehicle at the time for towing a heavy mobile w/shop so i rarely sat on 100 anyway. Peace of mind with the heavier box though. Ps, i wish i still had the ole girl!!!
Cheers,
Keepingitreal
AnswerID: 492782

Follow Up By: Patrick B1 - Wednesday, Aug 15, 2012 at 23:28

Wednesday, Aug 15, 2012 at 23:28
what year landcruser did the gear box come out of as i have a 105 converted to 6 wheeler. am looking at changing down a trye size to get a bit more torque in 5th gear. may be changing the gear box would be the way to go
0
FollowupID: 768561

Follow Up By: keepingitreal - Thursday, Aug 16, 2012 at 08:01

Thursday, Aug 16, 2012 at 08:01
Patrick, check out Thread ID: 40296 R151F conversion to H151F, Dec12 2006.

Hope this helps, Cheers Keepingitreal
0
FollowupID: 768570

Sponsored Links

Popular Products (13)