Welcome to the CJ-3B Bulletin Board, the discussion forums section of the website CJ3B.info. Everyone is invited to view the postings here, but you must register as a member in order to post messages. The moderator reserves the right to remove items posted. Items may be archived in the Tech Tips section of the website. If you post a tech problem, please follow up by posting the solution when it is found, as it may be useful to other readers. For forums covering other Jeep models, see the bottom of this page.
Search for keywords or phrases anywhere in the CJ-3B Bulletin Board using Google. Enter key words here.
| You're currently viewing the forums as a guest. This means there are some features you can't use. If you register, you'll be able to post messages and use member-only features such as customizing your profile and sending personal messages. Registration is simple and free. Join the CJ-3B Bulletin Board! If you're already a member please log in to your account to access all of our features: |
| Shock absorbers again | |
|---|---|
| Tweet Topic Started: Aug 31 2012, 10:49 AM (859 Views) | |
| jaspu | Aug 31 2012, 10:49 AM Post #1 |
|
Member
![]() ![]()
|
It is difficult to locate the correct Monroe shocks here at reasonable price. The shocks for WWII MBs are not usable, are they? Thanks Jan |
|
Jaspu Ex Swiss army 1953 TRANS-VINTAGE CJ-3B /replacement fuel pump / YF 938 S/ Hurricane with PCV / 8-1/2" clutch / T90-C / D-18, intermediate shaft 1 - 1/4"/open differential 5.375/ 12 Volt alternator Czech Republic | |
![]() |
|
| oldtime | Aug 31 2012, 10:58 AM Post #2 |
![]()
MODERATOR
![]() ![]()
|
Yes. MB, GPW, M38, CJ-2A, CJ-3A and CJ-3B replacement shocks should all be the same. |
|
Currently building my final F-134 powered 3B . Rock Crawler using factory parts from the Willys Motors era (1953-1963) http://s4.zetaboards.com/CJ3B_Bulletin_Board/topic/30228766/1/#new | |
![]() |
|
| jaspu | Aug 31 2012, 11:32 AM Post #3 |
|
Member
![]() ![]()
|
A military spare parts seller showed me the front and rear MB shocks. They were different in legth. Front ones looked similar when comparing the collapsed and extended lengts with my hopefully original ones. I noticed G503 ordnance marking stamped on NOS MB shocks. Confusing, isnīt it? |
|
Jaspu Ex Swiss army 1953 TRANS-VINTAGE CJ-3B /replacement fuel pump / YF 938 S/ Hurricane with PCV / 8-1/2" clutch / T90-C / D-18, intermediate shaft 1 - 1/4"/open differential 5.375/ 12 Volt alternator Czech Republic | |
![]() |
|
| t56tr | Aug 31 2012, 02:15 PM Post #4 |
|
Member
![]() ![]()
|
I am confused at what you are asking for, but I used the monroe 31000 on front and rear and they seem to be fine. I did new springs all around too, I used leafs that are supposed to provide 1" of lift, so that could make a diff in my application. |
| 54' 3B - 3A glass tub orig steel 3b cowl/dash/hood/ F134 1" superlift 16 steel wheels ndcc's | |
![]() |
|
| Rus Curtis | Aug 31 2012, 03:10 PM Post #5 |
|
Member
![]() ![]()
|
jaspu, I notice your signature block shows you're in the Czech Republic. I suppose it's possible that shock availability may be an issue. Oldtime has provided crossover comparison shock information. I looked in my Service Manual and here's the numbers provided. ![]() You'll notice they are the same front and rear. Just match up the shocks you are looking at with the measurements shown. My question to you is are these shocks you are being shown have compressed gas like modern shocks or the older fluid only shocks? |
|
Rus Curtis Alabama '54 CJ-3B "Green Gruntt" Bantam T3-C | |
![]() |
|
| jaspu | Sep 2 2012, 06:17 AM Post #6 |
|
Member
![]() ![]()
|
I think the older fluid is used. |
|
Jaspu Ex Swiss army 1953 TRANS-VINTAGE CJ-3B /replacement fuel pump / YF 938 S/ Hurricane with PCV / 8-1/2" clutch / T90-C / D-18, intermediate shaft 1 - 1/4"/open differential 5.375/ 12 Volt alternator Czech Republic | |
![]() |
|
| Rus Curtis | Sep 2 2012, 09:07 AM Post #7 |
|
Member
![]() ![]()
|
jaspu, The reason I asked is sometimes when you get the old fluid shocks, they have a "dead spot" in them where they feel like they don't work - even when new. This air gap needs to be purged in order to get the shock to work as designed. The newer gas charged shocks are different. If you purchase those shocks, they may need purging but its easy to do. |
|
Rus Curtis Alabama '54 CJ-3B "Green Gruntt" Bantam T3-C | |
![]() |
|
| willow green | Sep 3 2012, 10:08 AM Post #8 |
|
Willow Green
![]() ![]()
|
Ok, i'm not the most exp. rebuilder here, so could someone explain just where you would measure the lenghts of a shock absorber? (Is it from the center of mounting holes either extended or collapsed?) And just how do you purge a shock? Iguess i'm really dumb in this area. THANKS , Willow Green |
| 1953 CJ3B WILLOW GREEN | |
![]() |
|
| Rus Curtis | Sep 3 2012, 04:56 PM Post #9 |
|
Member
![]() ![]()
|
Willow, Yes, you measure from the center of the mount holes, collapsed and extended. The purge is easy - but only applies to older hydraulic shocks. Gas charged shocks cannot be purged. They're ready to go. The purely hydraulic shock, i.e. old shock, is not completely full of fluid. It has an air or gas pocket but is not pressurized. When holding the shock right side up, and you attempt to extend it, if working properly, you'll feel resistance all the way to extension. If not working properly, you'll feel a gap or "dead spot" where it feels like the shock is broken or not working and will extend - at least part of the way - with no resistance at all. This is a shock that needs to be purged. There are two chambers in this type shock (the old shock): The inner and outer chamber. The inner chamber has air in it and needs to be pushed out to the outer chamber where it can sit and not affect the operation. The ports are at the bottom of the shock. Collapse the shock and turn it upside down. Extend it while still inverted. You'll feel some of the air pass through the ports. When fully extended, turn the shock upright and collapse. Repeat until all the air from the inner chamber has been purged to the outer chamber. Once you can pull on the shock and not feel a dead spot, it is ready to be installed. |
|
Rus Curtis Alabama '54 CJ-3B "Green Gruntt" Bantam T3-C | |
![]() |
|
| Bryan | Sep 4 2012, 10:07 AM Post #10 |
|
Member
![]() ![]()
|
I just bought a set of heavy duty shocks from Walck's a few weeks ago. They made a world of difference. The old shocks had been on since the 60's, and may have been original for all I know. |
|
1954 CJ3B...Original: F-134, T90, D18, Front and rear axles, Ross steering, Harrison heater, all body parts Replaced parts: Carter YF938SD. Upgrades: Front disc brakes (77 CJ5), rear 11" brakes (early 70's Wagoneer), dual master cylinder (Herm), roll bar, seat belts, custom wiring harness w/ turn signals (me), Carter glass bowl fuel filter, Tightsteer. 3rd generation of original owner South central KY | |
![]() |
|
| willow green | Sep 4 2012, 06:40 PM Post #11 |
|
Willow Green
![]() ![]()
|
Thanks Rus, a world of knowledge is in this forum. Willow |
| 1953 CJ3B WILLOW GREEN | |
![]() |
|
| « Previous Topic · CJ-3B Posts · Next Topic » |



![]](http://z4.ifrm.com/static/1/pip_r.png)





3:41 AM Jul 11