172-65318MA-04 (GP10/GT10/GP14/GT14 PowerTrap) 23 Nov 2018
30
5a. Checking / Adjusting the Gap between the Push Plate and Intake Valve
(Motive Medium)
Part / Step Disassembly
Reassembly
Checking the
gap between
the push
plate and
intake valve
(motive
medium)
• No action
required
• It is necessary to inspect the gap to determine whether
adjustment is necessary
only
when installing a new snap-action
unit or an overhauled snap-action unit (from this or another
PowerTrap).
• The snap-action unit must be installed before the gap inspection
can be carried out. A feeler (go/no-go) gauge to be used in gap
inspection is supplied with each spare snap-action unit and with
each spare trap unit for the GT10/GT14 (see step 8a). To check
the gap, carefully slide the thin end of the feeler gauge (marked
I.V.) into the gap between the push plate and intake valve (motive
medium).
Feeler Gauge
Use this end
INTAKE VALVE
PUSH PLATE
• If the gap is already adjusted properly (3 ± 0.3 mm, 0.118
±
0.012
in), the gauge will stop when the valve contacts the no-go lip.
Go
No-Go
Feeler Gauge
• The valve is free to move vertically, so be certain to hold the base
of the gauge flush with the push plate, and do not force the gauge
past the no-go lip.
Adjusting the
gap between
the push
plate and
intake valve
(motive
medium)
• No action
required
• When a snap-action unit that has been removed from the cover is
reinstalled without being overhauled, do not loosen the holder
nuts from the push plate.
• If the previous inspection reveals that the gap is out of the
accepted range (3 ± 0.3 mm 0.118
±
0.012 in), proceed with gap
adjustment.
• Loosen the holder nuts with two 22 mm (
7
⁄
8
in) wrenches, one an
open-end wrench, and one an open-end torque wrench.
Open-end Wrench
Open-end Torque
Wrench
• Set the position with the upper nut, then finger-tighten the lower
nut.
• Recheck the gap with the feeler gauge.
• When adjustment is complete, hold the upper nut steady with the
open-end wrench and tighten the lower nut with the open-end
torque wrench to a torque of 60 N
⋅
m (44 lbf
⋅
ft).
• Recheck the gap, and, if necessary, repeat the adjustment
procedure.
(1 N
⋅
m
≈
10 kg
⋅
cm)