Wornsubframebushes,especiallytherearmostV-shapedbushes,are
difficulttospotuntiltheengineissupportedandthesuspensionisn’t
underload.Here,thebusheshaveseparatedandneedreplacing
Thefirststageinrenewingtherearmostbushesforthefrontsubframe
istosupporttheenginesoitsmountscanbeundone.TomLenthall’s
technicianfitsanenginesupportbeamacrossthefrontwingsoftheXJ6
andattachesittoaliftingeyeontheengine
1 2
Thesubframeissupportedusinga
transmissionjackandablockofwood.This
takestheloadoffitsmountingboltssothey
areeasiertoundo
4
A^9 / 16 innutinthemiddleofeachV-shapedfront
subframemountsecuresthesubframeinto
position.Afterundoingthisnut,thebroken
mountisfreetomove,butcannotberemoved
3 5
Afterextractingoneofthesubframemounts,
compareitwiththereplacementyouintend
tofittomakesurethenewoneisthecorrect
shapeandsize,andhasthesamemounting
holesandcentrethread
10
Manoeuvrethenewmountintoposition,if
necessaryusingaprybarforextraleverage.
Clean,greaseandreusethetwo9/16inbolts
thatsecurethemounttocaptivenutsinside
thechassislegs
11
Aprybarmayberequiredtoleverthesubframe
awayandextracttheoldmount.Itmayhelpto
dropthesubframedownalittle,butitmuststill
besupportedbythetransmissionjack
9
Two9/16inboltssecureeachsubframemount
tothechassislegs.Oneiseasytoseeand
accessfromunderneath,whereastheotheris
moreawkwardtofindandundo
7
Withengineandsubframesecurelysupported,
trytomanoeuvreeachsubframemountout
frombetweentheundersideofthechassisleg
andtopofthesubframe
8
Theenginemayneedliftingalittlemoreto
ensureitstwomountsarenotpushingdown
onthefrontsubframe(whichwouldmakeit
hardertoremovetheoldsubframemounts)
6
FRONTSUBFRAME:REARBUSHES
Totakepressureoffthesubframe,withtheengine
supported,undofour½inboltsatthetwoenginemounts
(betweensidesoftheengineblockandsubframe)
wherethemountsaresecuredtothesubframe
July 2019 \JaguarWorld|9 1
CLASSICWORKSHOP