Parts Catalog Accessories Catalog How To Articles Tech Forums
Call Pelican Parts at 888-280-7799
Shopping Cart Cart | Project List | Order Status | Help




Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion

Reply
 
LinkBack Thread Tools Display Modes
  #1  
Old 06-10-2018, 06:17 PM
Registered User
 
Join Date: Dec 2007
Posts: 4,693
Hydraulic floor jack, life span?

I have a 3 ton Sears Craftsman floor jack that has been in use for over twenty years. I changed out the hydraulic fluid a few years ago. So far no problems although when I want to jack up the 1984 300 DT, I place a four foot long piece of 2X4 lumber under the frame member. I usually have to air up the tires to around 40 PSI to allow enough room for the jack to slide under the 2X4.

NAPA has a really nice low profile jack; that said, I tend to be a cheap skate and don't want to spend money if I don't have to.

Ideas and input are appreciated.......
__________________
1991 560SEL, 1984 300DT
Reply With Quote
  #2  
Old 06-10-2018, 06:59 PM
Mad Scientist
 
Join Date: Dec 2012
Location: Oregon
Posts: 1,381
You probably won't be able to justify getting a new jack by wearing out the one you have. You can also drive the car onto 2x6's or similar to get a bit more room, instead of airing up the tires.

WANTING a new jack is reason enough to get one.
__________________
617 swapped Toyota Pickup, 22-24 MPG, 44k miles on swap
Reply With Quote
  #3  
Old 06-10-2018, 06:59 PM
Registered User
 
Join Date: Dec 2006
Posts: 2,839
I have a Chinese jack that I bought in Napa thirty years ago. Works every day, but I think it's time to replace it.
Reply With Quote
  #4  
Old 06-10-2018, 08:09 PM
1985 190d
 
Join Date: Nov 2006
Location: canadian border vermont
Posts: 481
I’ve destroyed a few hydraulic jacks in my career as a barn builder and my experience is they dont die with a bang but a whimper—they get weaker and one day they just fail to do their duty and lift things. Screw jacks are another matter.
Reply With Quote
  #5  
Old 06-10-2018, 08:16 PM
Registered User
 
Join Date: Sep 2006
Location: Middle TN
Posts: 3,497
I remember my father in law repairing a jack back in the 70s. The jack's seals had failed. He was a machinist, took the jack apart, cut a groove to take an o-ring and put the thing back together. I think the failed seal was leather or something.

Regardless, I have a jack that's been working since at least 1984. They were much more expensive especially when measured relative to wages. I think that one was $200 or 300 back then which was represented week of work.
__________________
85SD 240K & stopped counting. 84SD 180,000. Thinking of painting both.
Reply With Quote
  #6  
Old 06-10-2018, 09:42 PM
Diseasel300's Avatar
Registered User
 
Join Date: May 2016
Location: Texas Hill Country
Posts: 3,999
As has already been said, hydraulic jacks last a *VERY* long time. Your clue that they need attention is when they fail to hold up and start sagging. Eventually you'll get to a point where it's a race to pump it up and get the jack stands under the car (NEVER EVER work under a car supported solely by a hydraulic jack!). Usually when that happens it's due to wear in the cylinder seals. Most of them can be rebuilt and back to like-new for decades more use.
__________________
'11 Honda Accord EX - "The Daily" 64K
'83 500SL Euro - "The Money Pit" 116K
'86 300SDL - "The Diseasel" 186K
The Diseasel Thread - Everything You Didn't Know You Wanted To Know
Reply With Quote
  #7  
Old 06-10-2018, 10:54 PM
JHZR2's Avatar
Registered User
 
Join Date: Jan 2002
Location: New Jersey
Posts: 3,654
Supposedly the yellow Daytona jack at Harbor Freight is selling for $179 and is the same unit that Snap On sells. Im not a fan of Chinese dumped products, but there just isnt a whole lot in the cost effective US made jack arena. Even Hein Warner is now US made but Chinese owned.

If there's something worthwhile at HF, Id say its their jacks. Their little Aluminum ones are pretty awesome if you can keep the wheels from corroding...
__________________
Own:
1981 240D (73K)
1982 300CD (162k)
1991 350SD (113k)
1998 Chevrolet S-10 ZR2 (62K)
2011 BMW 135i cv (14k)
2014 Honda Odyssey (6k)
2015 Honda Accord Hybrid (5k)
Had:
2008 VW Rabbit (70k)
2004 SAAB 9-3 (83k)
1991 BMW 318i (183K)
1983 300D (228K) (wrecked by at-fault uninsured driver)
1985 300D (233K) (now in FL)
1994 Acura Integra (188k) (Rusted out)
1992 Toyota 4Runner (72k) (Rusted out)
1990 Daihatsu Rocky (??) (No parts)
Reply With Quote
  #8  
Old 06-11-2018, 01:50 AM
vstech's Avatar
DD MOD, HVAC,MCP,Mac,GMAC
 
Join Date: Mar 2006
Location: Mount Holly, NC
Posts: 26,179
I still have my grandpas jack from when he was rebuilding his model A... seriously.

I think it was from the 60’s... still works... weighs a ton.

I mostly use the hardly fright aluminum jacks now... I have a slew of them...

Low profile one, tiny one, huge one... etc... they are cheap, and light, and wrk well...
__________________
John HAUL AWAY, OR CRUSHED CARS!!! HELP ME keep the cars out of the crusher! A/C Thread
"as I ride with my a/c on... I have fond memories of sweaty oily saturdays and spewing R12 into the air. THANKS for all you do!

My drivers:
1987 190D 2.5Turbo
1987 190D 2.5Turbo
1987 190D 2.5-5SPEED!!!

1987 300TD
1987 300TD
1994GMC 2500 6.5Turbo truck... I had to put the ladder somewhere!
Reply With Quote
  #9  
Old 06-11-2018, 06:29 AM
Father Of Giants's Avatar
Registered User
 
Join Date: Feb 2017
Location: Newport News, Virginia
Posts: 928
With seal replacement, nearly forever. We DO like our tools so, go ahead and splurge, the Daytona jack will make your life a lot easier.
__________________
1986 Mercedes 300SDL Black - 320,000 miles. Out of retirement-
2000 Mercedes E320 Black - 128,000 miles - New daily driver.

Don't forget to grease the screw and threads on the spring compressor.
Reply With Quote
  #10  
Old 06-11-2018, 09:45 AM
Registered User
 
Join Date: Oct 2012
Posts: 4,369
There to me on occasion is nothing quite like a large heavy floor jack from long ago. They are still out there. Of course you would not use them for everything today. You just cannot beat the lift they give you. You are pretty much limited to using them on a concrete surface as well.

This theory that you cannot have enough jacks is semi true. I do a few yard sales at the early part of the year. Partialy because I run across people I may not have seen for a long time. Last Saturday there was your typical cheap hydraulic jack and two jack stands for 11.00. So into the trunk they went.

I am not chicken little in life. I just will not get under a car with any part of my body. With the car on jack stands alone. Never have. Something in my mind tells me it is not totally safe. Block the car as well as it only takes a minute or two.

Along with yet another 5 gallon plastic gas jug. I kind of get pissed off at what they normally retail for now. For what they are.
Reply With Quote
  #11  
Old 06-11-2018, 09:53 AM
spock505's Avatar
Registered User
 
Join Date: Nov 2007
Location: Blighty
Posts: 1,164
Try bleeding the jack cylinder, sometimes they get air in after a while this being the case on mine - still not perfect but a lot better.
__________________
David


1996 Mercedes S124 E300TD - 129k - rolling restoration project -

1998 Mercedes W210 300TD - 118k (assimilated into above vehicle)
Reply With Quote
  #12  
Old 06-11-2018, 10:13 AM
Fold on dotted line
 
Join Date: Aug 2007
Location: SE Mich
Posts: 2,996
Quote:
Originally Posted by barry12345 View Post
There to me on occasion is nothing quite like a large heavy floor jack from long ago. They are still out there. Of course you would not use them for everything today. You just cannot beat the lift they give you. You are pretty much limited to using them on a concrete surface as well.

This theory that you cannot have enough jacks is semi true. I do a few yard sales at the early part of the year. Partialy because I run across people I may not have seen for a long time. Last Saturday there was your typical cheap hydraulic jack and two jack stands for 11.00. So into the trunk they went.

I am not chicken little in life. I just will not get under a car with any part of my body. With the car on jack stands alone. Never have. Something in my mind tells me it is not totally safe. Block the car as well as it only takes a minute or two.

Along with yet another 5 gallon plastic gas jug. I kind of get pissed off at what they normally retail for now. For what they are.



Jacks do last a long time unless they are destroyed by using the wrong type of fluid.


In the old days, people used latex or EPDM O-rings and a vegetable-based fluid.


Later, mineral oils were developed that did not collect water and lasted longer. Mineral oil destroys the old seals. On real old jacks, you would be better off putting Wesson oil or Mazola corn oil in the real old jacks, the seals were compatible.


Any jack made after about 1968 will use Buta-N or Nitrile O-rings and mineral oil. In some you can use non-detergent SAE 30 as long as you don't use it in sub zero temps. Thinner non-detergent oil will work ok in those.
The big issue is cleanliness and sealing. That's why the super old jacks were made with plates on the bottom users can unscrew, clean, re-seal and refill for another 200 years of use!
__________________
Strelnik
Invest in America: Buy a Congressman!

1950 170SD
1951 Citroen 11BN
1953 Citroen 11BNF limo
1953 220a project
1959 180D
1960 190D
1960 Borgward Isabella TS 2dr
1983 240D daily driver
1983 380SL
1990 350SDL daily driver alt
3 x Citroen DS21M, down from 5
3 x Citroen 2CV, down from 6
Reply With Quote
  #13  
Old 06-11-2018, 12:58 PM
mbolton1990's Avatar
Registered User
 
Join Date: May 2013
Location: FL
Posts: 322
I have to add oil to my HF jack every year or so, has bad seals from sitting outside it's whole life. But a little bit of ATF each year for faithful operation isn't much to ask for. Can add oil in as little as 5 minutes.
__________________
85 190D 5SP
91 300D 2.5T
"Ich mag die Dieselgeräusche"
Reply With Quote
  #14  
Old 06-11-2018, 03:44 PM
Registered User
 
Join Date: Oct 2008
Location: Northeastern Massachusetts
Posts: 179
I just rebuilt my early model WALKER 1 1/2 ton c. 1980's ? for more than twice the money what I could have bought a new HF jack with double pump piston.
Reply With Quote
  #15  
Old 06-11-2018, 06:07 PM
Shadetree
 
Join Date: Jan 2010
Location: Back in SC upstate
Posts: 1,292
My youngest son bought one of the huge jacks manufactured back in the 1940/50s. It's a bear to move around but it's still kicking. I think he said he paid 20 bucks for it.

I also have one of the Harbor Freight jacks similar but made with aluminum. You can pick it up with one hand.

I'd be surprised if that old jack quits before me and the HF jack do.
__________________
84 300SD
85 380SE
83 528e
95 318ic
Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On
Trackbacks are On
Pingbacks are On
Refbacks are On




All times are GMT -4. The time now is 03:35 PM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2018, vBulletin Solutions, Inc.
Search Engine Optimization by vBSEO 3.6.0
Copyright 2018 Pelican Parts, LLC - Posts may be archived for display on the Peach Parts or Pelican Parts Website -    DMCA Registered Agent Contact Page