SHUTTLE BOX

CAN ANYBODY HELP WITH PLUNGER ADJUSTMENT
IN SHUTTLE BOX THANKS MS

That plunger is the clutch cutout or dump valve,it should be held in by the linkage and have 10 thou free play from bottoming.in other words the linkage should push the plunger across till it is 10 thou from bottoming,when you press the pedal the plunger comes out allowing the valve to open and dump the oil pressure that was squeezing the clutch pack together giving it drive,JCB have always named and packeted their oil,originally the shuttle oil was the red ATF fluid,nowerdays any generic HyTrans oil will do fine,use the same in the back axle,if its 4x4 you use 80/90 gear in the diff,hubs of the front axle,the swing gearbox and the four speed transmission,the brakes use the same as the hydraulics tellus 32,the common problem with losing forward drive I'm sorry to say is an internal one,the forward clutch has a pressure plate disc called a Belleville spring,its like a large concave washer,it can crack and lose its tension and cause lose of drive,that Borg Warner shuttle is common to a lot of other machines,the Case 580 From C to K used it the only differ was the clutch cut out was electric on the Case,try the adjustment and make sure the oil level is right,brake on,engine low idle,transmission in 4th gear,shuttle in neutral pull the stick and check the level.do not overfill it.
AJ

thanks aj for the fast reply, will try what you said
and see what happens ms

HI AGAIN. LONG TIME A LOT OF GIRLS IN THE TEAM
HER INDOORS DID NOT FANCY CLIMBING INTO A 3CX
DONE WHAT YOU SAID IT GOES BETTER NOW BUT STILL NEEDS A BIT MORE .IT IS SLOW ON THE INCLINES
WHAT WOULD BE THE NEXT MOVE .OILS. RED ATF IN THE
SHUTTLE.RED ATF IN THE GEARBOX. RED ATF IN REAR AXLE 2WD. SHOULD THIS RED STUFF BE IN THE AXLE
MUCH THANKS FOR YOUR HELP AND TIME. MS

Your machine is probably 30 years young and oils have changed a lot since then,the simplest way to manage the power train oils is use a HyTrans oil in the shuttle,transmission and rear axle,all backhoes have the complaint that they will slow up on inclines but remember that they are carrying a full load and it is normal for them to lose speed on an incline,having had lots of this complaint over the years we check to see if they can spin the wheels when loading the front bucket in first gear,if they can do that it's as good as it gets,make sure the engine is running right,check that the throttle cable is pulling the lever on the pump against the stop,do a stall test,with the machine warmed up and out of gear start the engine and go to full throttle,note the techo reading,go back to low idle,apply the brakes,select fourth gear,put the shuttle in forward,increase the engine speed slowly to full throttle and note the techo reading,do the same test in reverse and compare them,if the reading differs it would indicate one of the clutches has an issue,if both are the same and it is pulling the engine down around 400 rpm all is good.if it is not pulling the engine down then there is a problem with the torque,if it is pulling the engine down more that would indicate the engine has an issue.
AJ