Longacre 73512 Valve Spring Tester - Manual

08/11
Longacre Racing Products, Inc.
www.longacreracing.com
Low Battery Indicator
Recharge for 12-24 hours. Display
will run for 12+ hours on a charge.
LED changes to green while
charging and does not go out when
battery is charged.
You can run the display with the
charger connected. However if
you experience some instability
of the readings it is probably
caused by electrical ‘noise’ on
the power line. Simply
disconnect the charger and run
on battery power.
Instructions for Valve Spring Tester
The travel indicator
uses a separate LR44
‘coin’ battery,
installed just under
the SET button.
TURN OFF WHEN
NOT IN USE.
Low battery is indicated by
all digits flashing.
Connect here
Travel Indicator:
Move upper plate down to touch the base & Zero travel – push
the red ZERO button. Or you can Zero anywhere along the
travel.
If you Zero when the upper plate just touches the spring it will read the
amount you are compressing the spring. Or you can set the stop on the rack
at the top to duplicate readings.
If you are checking inner and outer
springs you should check them with
the retainer as the inner spring(s) sits
on a step in the retainer and is
compressed more than the outer one.
To make the travel read correctly when using
the retainer put the outer step of the retainer
between the upper and lower plates when
Zeroing the travel indicator.
Spring Pressure
Display:
Zero with no load.
Reads in lbs. (or kgm)
Handle can be
relocated as needed,
depending on the
length of the springs
being tested.
Loosen bolt on collar and
slide entire pinion shaft
and handle out. Reposition
as needed, reinstall collar
and tighten.
Charger/Power
Supply
connection
(on back)
Travel Stop
Pinion Shaft
#73511
(1400 lb by 1lb) and
#73512
(700 lb by .1lb)