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Temp/Oil pressure gauge

Temp/Oil Pressure Gauge Removal

Does anyone have any words of wisdom on the proper removal of the oil
press/temp gauge in a 150? I need to have mine refurbished and I was hoping
to avoid any problems by checking with the group before I started. Thanks -
Ron, '59 150 dhc

Hi "Jumpem" (Ron) and all -- Removing the oil/water gauge requires PATIENCE
and watching for DETAILS:  (1) remove all upholstery panels under
dash/instrument panel; you'll need access under there; (2) remove
instrument panel wood/silver cover carefully to gain access to two holding
bolts; (3) snake up under instrument panel with 7/16" small open-end wrench
and unscrew nut that holds metal oil pressure line (you may have to keep
flipping wrench and doing 1/8 turn at a time); (4) under bonnet, remove
thermostat connection at front of manifold (3/4" or so open-end wrench; be
CAREFUL not to bump tube; this is the most fragile part of gauge; bending
or even hitting tube can cause it to fractore despite metal spring
covering; if it fractures, the inside goes away and it's new-gauge time;
(5) working from under bonnet, remove ALL clips that hold tube in place,
making sure (drawings or photos) you know where/how they go back;  (6)
remove two gauge holding bolts; (7) with help from someone under dash
inside driver's compartment, thread tube through scuttle (firewall) hole
while gauge itself is removed to the rear. until tube amd gauge are totally
clear of under-dash area. Replacement is reverse of removal, but be CAREFUL
on the thermostat tube -- it can fracture with ANY excessive pressure
ANYWHERE in its rather long length. Having done this successfully on Mk
VII, XK120, and Mk IX (all the same gauge, same procedure as Ron's 150), I
hope this helps -- Larry Martz

Larry, Once the gague is ready for reinstallation, apart from the obvious
care, are there some do's and don'ts in regards to bracing and tying the
capillary tube down to prevent vibration and fatigue. - Regards, Klaus
Nielsen, 140FHC, with respect

Hi Klaus Neilsen & all -- Note that I specifically said: (5) remove all
clips for tube, making sure you know (drawings/photos) how they go back --
beyond this, it depends on each individual car & how much bodged by
previous owners -- you have to make some judgements here, but remember that
the tube flows from inlet manifold to gauge with NO sharp corners, etc. --
1" or so diameter curves, bent gently with fingers/thumbs are OK, but NO
straight (I_ 90 degree) bends, because at I_, tube will fracture -- have
snipped rest but left basic piece in in case you didn't print it first time
- Larry Martz

Anyone care to describe exactly where and how their (original only please)
gauge lines are clipped?  There are some good photos in the handbooks by
the way. - Regards, John Elmgreen

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