series 2 a gears/transfer box

**bentleighboy** · 3rd January 2014, 08:41 PM

Ok chaps time for what might be a dumb question.

Over the holidays I have been driving my "new" 64 series 2a a bit, on gravel roads and generally getting to know her. Top of the list has been achieving proficiency changing between LR, HR and 2wd/ 4wd

I think what is happening is that I cannot get her into 2wd high

Heres what happens, to check my understanding:

Move red knob back into LR- yellow knob pops up. When selecting LR it should automatically go into 4wd, right? However, does yellow knob up not mean 2wd? In LR , I now cannot push the yellow knob in. It stays up.

Selecting HR- main gear in N: Moving red knob forwards. I am unable to get any drive when doing this. However, if I now depress yellow knob and try again, the red knob seems to feel 'different' (like it is engaging gears correctly) and now I have drive.

The manual and other online sources suggest that if having trouble selecting HR then re select any gear in main box, then back into N, and try again. This doesn't seem to help.

So am i correct in thinking that I cannot get HR 2wd?

And with LR selected is she indeed in 4wd with the yellow knob up?

I should add that I have just changed the gear box and TF box fluids with the appropriate Castrol modern product and she seems to be shifting pretty sweetly otherwise.

Thanks in anticipation and happy new year to all.

**Landy Smurf** · 3rd January 2014, 09:27 PM

I am myself confused how I drive a series.
In 2WD in HR - main gear in N or in gear with clutch - Red knob into N or LR - push yellow knob down - If red knob is in N select LR- if it wont select LR let out the clutch in a gear and try selecting LR again. * This will be 4WD LR
Getting back into 2WD, move red knob forward and yellow knob should pop up.
I am not a 100% on that though as I have not done it for a while or often

**JDNSW** · 3rd January 2014, 09:48 PM

Look at it like this.

The red knob has three positions - High, Neutral, Low.

The engagement dog clutch for the front prop shaft is engaged and disengaged via two springs. When the red lever is moved back into Low, front wheel drive is engaged via the spring (taking care of the situation where the teeth are lined up and would otherwise cause problems engaging Low). At the same time a selector shaft is moved, compressing a third spring and allowing the pin controlled by the yellow knob to engage in a hole.

When the red lever is moved forward to high, front wheel drive is disengaged (via a spring, so if there is windup it will not immediately disengage). If the yellow knob is now depressed, the third spring referred to above engages front wheel drive.

The symptom you report, not being able to engage high without pressing the yellow knob, suggests one of the selector shafts is not moving freely. There are three of these, all protruding from the front of the transfer case extension, covered by a pressed metal dust cover which has the low range selector shaft coming though and connected to the red lever. Most likely the dust cover is missing or filled with muck and/or the protruding part of the shafts are rusty and sticking where they go through the housing. Usually just need cleaning up to free them. A workshop manual makes this clearer, but the mechanism is difficult to understand until the light suddenly dawns!

John

**Landy Smurf** · 3rd January 2014, 11:16 PM

**123rover50** · 4th January 2014, 06:00 AM

Broken axle?

**JDNSW** · 4th January 2014, 06:22 AM

Originally Posted by 123rover50

Broken axle?

Or rear diff! Didn't think of that!

Might be worth jacking up some wheels and analysing exactly what is going on re four/two wheel drive.

John

**chazza** · 4th January 2014, 08:37 AM

Or; chance-in-a-million but it happened to me once - make sure that both propellor shafts are still fitted,

Cheers Charlie

**Carzee** · 4th January 2014, 08:40 AM

Originally Posted by chazza

Or; chance-in-a-million but it happened to me once - make sure that both propellor shafts are still fitted,

Cheers Charlie

bookmarked; I shouldn't opt for the cheap caravan parks....

**chazza** · 4th January 2014, 08:51 AM

Originally Posted by Carzee

bookmarked; I shouldn't opt for the cheap caravan parks....

**bentleighboy** · 4th January 2014, 01:10 PM

Fantastic guys thats added to my understudying a lot
So despite the yellow knob popping up in LR it is still in 4wd right?
I will try jacking up some wheels to see what happens, and then pull a few panels off and have a look at the mechanism you describe.
Thanks again,

Thread: series 2 a gears/transfer box

Thread Tools

series 2 a gears/transfer box

Thanks all

Bookmarks

Bookmarks

Posting Permissions