Bus Conversions dot Com Bulletin Board
July 22, 2014, 06:38:32 PM *
Welcome, Guest. Please login or register.

Login with username, password and session length
News: If you had an E-Mag Subscription:  It will not get lost in the mail.
   Home   Help Forum Rules Search Calendar Login Register BCM Home Page Contact BCM  
Pages: [1]   Go Down
  Print  
Author Topic: Reviving an old Jake  (Read 628 times)
rydrman
Newbie
*
Offline Offline

Posts: 32



WWW

Ignore
« on: October 04, 2013, 03:30:13 PM »

Hey folks,

Just got myself a beautiful 1981 MC9 for my conversion Smiley There is a jake brake switch up front and the company thinks the brakes are still there but stopped being maintained quite some time ago. Needless to say they don't engage at all. Anybody have an idea where I would start diagnosing them? Though I guess my first step should be checking to make sure they're actually still on the block...

Cheers!
Logged

luvrbus
Hero Member
*****
Offline Offline

Posts: 12055




Ignore
« Reply #1 on: October 04, 2013, 03:31:50 PM »

That is where I would start
Logged

Live each day like it was your last,one day it will be
Utahclaimjumper
Hero Member
*****
Offline Offline

Posts: 835




Ignore
« Reply #2 on: October 04, 2013, 04:59:58 PM »


 Its as simple as removing the valve covers.>>>D ( And you only need to do the easiest one)
 (The "company" may have removed and sold them, they bring big money used)
« Last Edit: October 04, 2013, 05:04:08 PM by Utahclaimjumper » Logged

Utahclaimjumper 
 EX 4106 (presently SOB)
Cedar City, Ut.
 72 VW Baja towed
robertglines1
steam nut
Hero Member
*****
Offline Offline

Posts: 3969





Ignore
« Reply #3 on: October 04, 2013, 05:06:12 PM »

ck the switch.  see if it has continuity.
Logged

Bob@Judy  98 XLE prevost with 3 slides --Home done---last one! SW INdiana
sdc53
Jr. Member
**
Offline Offline

Posts: 87




Ignore
« Reply #4 on: October 04, 2013, 08:50:13 PM »

See if you have power to one side of the buffer switch when the dash switch is turned on.  Of course this is after you pull the valve covers to see if they are still there.  Probably an electrical problem.
Logged

Scott
Gladstone, OR
1969 PD4107
luvrbus
Hero Member
*****
Offline Offline

Posts: 12055




Ignore
« Reply #5 on: October 05, 2013, 04:49:50 AM »

If they are there it will be a electrical or oil problem for sure only the 2 things it can be fwiw like anything they wear out and need rebuilding new control valves,o-rings and springs a kit cost around 125 bucks from a aftermarket supplier lot of buses have the switch with no Jakes is that a 8v71 engine ?  
« Last Edit: October 05, 2013, 05:38:02 AM by luvrbus » Logged

Live each day like it was your last,one day it will be
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.18 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!