Bogert Aviation 19M-15X Instruction sheet

PRODUCT INSTRUCTIONS
Model Number: 19M-15X
Bogert Aviation 15X Strut Pump Instruction Manual
Revised March 8, 2019

2
A
C
B
D
E
G
F
Part
Number
Quantity Description
19M-15X 115X Strut Pump Assembly
Please ensure you have received all
the listed items above. If you are
missing any part listed above, please
give us a call at 1-800-627-8088.
AInlet Port
BSlide Valve
CHigh Pressure Cylinder
DBleed Hole
ECheck Valve
FCheck Valve
GGooseneck Fitting
H3 Foot Hose
IInlet Nitrogen Fitting
(not pictured in this diagram)
JPressure Gauge
K“T” Coupler
LReturn Line
MLow Pressure Cylinder
H
J
M
L
K

3
The warnings, precautions, and instructions discussed in this manual cannot cover all possible
conditions and situations that may occur. The operator must understand that common sense and
caution are factors, which cannot be built into this product, but must be supplied by the operator.
BEFORE GETTING STARTED
1. Remove the protective plastic plug in the air inlet port (A)
and replace with a suitable ¼ NPT air coupler that is com-
patible with your other air tools. Do not over tighten.
2. Add 3 or 4 drops of strut oil or 30 wt engine oil into the air
inlet port (A).
3. Remember to use clean, dry air. It is important to make
sure that your air compressor has been drained of
condensation recently.
WARNING: Wear safety glasses. You are dealing with high
pressure air and oil. Protect yourself!
IMPORTANT NOTES
1. The pump will not cycle unless the high pressure hose is
connected to the strut.
2. Connecting the inlet air source to the 15X before attaching
the high pressure hose will cause air to pass through the pump
and out the end of the high pressure hose.
WARNING: Hose may whip and cause harm if air is
connected and hose is not secured.
3.The valve core in the strut valve will be opened with
differential pressure. There is no “Pin” in high pressure strut
fitting.
4. After several uses, add 3 or 4 drops of strut oil or 30 wt engine
oil to the inlet port (A) of the pump.

4
D
TO OPERATE WITH AIR
1. Connect the high pressure hose fitting (G) to the aircraft strut
valve and tighten by hand. Some strut valves require a locking
jam nut to be loosened first. Consult the appropriate service
manual.
WARNING: 150psi is the maximum allowable pressure at the inlet.
2.Connect the strut pump inlet (A) to shop air or nitrogen tank with
a regulated pressure of between 80psi and 150psi. The pump
works best if 100psi to 150psi is applied to the inlet.
3. Operate the slide valve (B) back and forth on the inlet end of the
pump. This will cycle the internal piston back and forth until the
desired pressure or strut extension is obtained. You will hear the
piston come in contact with the pump body at the end of each
stroke. If the pump fails to build pressure—see Step 6 and retry.
4. Disconnect the shop air hose at the inlet port (A). Disconnect the
high pressure air hose from the strut.
5. After 4 or 5 uses, inject 3 or 4 drops of strut oil or 30 wt engine
oil into the air inlet port (A).
6. After extended non-use, the internal
piston may become stuck if it was left
in the extended position. The internal
“O” rings may stick slightly because of
this. It may be unstuck easily by using a
blow gun and air supply. Just apply shop
air to the large cylinder bleed hole (D).
The “cylinder sticking” can be eliminated
if the piston is “Parked” in the retracted
position. Simply move the slide valve
(B) back toward the air inlet (A) before
disconnecting the air supply

5
TO MODIFY FOR NITROGEN
1. Remove steel line (C).
2. Remove the 90° fitting (E) and remove sealing tape from the check
valve (F) threads.
3. Apply 4-6 wraps of Teflon sealing tape to the clean check valve
threads.
4. Install the nitrogen adapter assembly (H) to the check valve (F).
5. Tighten to 100-120 in. lbs. aligning the tube fitting with the fitting at
(A).
The warnings, precautions, and instructions discussed in this manual cannot cover all possible
conditions and situations that may occur. The operator must understand that common sense and
caution are factors, which cannot be built into this product, but must be supplied by the operator.
8. Mark tube (C) for trimming. Measure 1/4” past the open end of
the tube fitting on the nitrogen adapter. Trim the tube to this
mark.
9. Remove tube (A). Slip nut and sleeve over trimmed end of tube
(C). Insert tube (C) into nitrogen adapter and then into (A).
10. Tighten the tube nut at (A) and then tighten tube nut at the
nitrogen adapter.
6. Insert the curved end of tube (C) into fitting (A).
7. Remove the nut & sleeve from the tube fitting on the nitrogen
adapter.

6
CH
I
F
A
C
B
D
E
G
F
AInlet Port
BSlide Valve
CHigh Pressure Cylinder
DBleed Hole
ECheck Valve
FCheck Valve
GGooseneck Fitting
H3 Foot Hose
IInlet Nitrogen Fitting
(not pictured in this diagram)
JPressure Gauge
K“T” Coupler
LReturn Line
MLow Pressure Cylinder
H
J
M
L
K

7
TO OPERATE WITH AIR AND NITROGEN
1. Connect the high pressure hose fitting (G) to the aircraft strut valve
and tighten by hand. Some strut valves require a locking jam nut
to be loosened first. Consult the appropriate service manual.
2. Attach the nitrogen tank outlet hose to the inlet fitting on the
nitrogen adapter (I). Set nitrogen pressure to 100-150psi.
Nitrogen pressure should be slightly higher than air pressure.
3. Attach compressed air to fitting (A). (80-150psi)
4. Operate slide valve (B) until desired pressure or strut extension
is obtained. Park slide valve in the back position.
5. Shut off nitrogen bottle. Disconnect inlet air hose. Disconnect
high pressure hose from the strut.
The warnings, precautions, and instructions discussed in this manual cannot cover all possible
conditions and situations that may occur. The operator must understand that common sense and
caution are factors, which cannot be built into this product, but must be supplied by the operator.
TROUBLESHOOTING
1. No leaks can be tolerated. The Gooseneck fitting and seal need
to be tight. Make sure there are no other leaks.
2. Make sure the pump is cycling back and forth when you operate
the slide valve. If the piston does not cycle, refer to the
Instruction 6 on Page 4.
3. If the pressure bleeds off, a check valve may be hung up with
something under the valve seat. Disconnect the air and or nitro-
gen supply. Disconnect the Gooseneck Fitting from the strut and
secure. Hook up shop air and allow air to blow through the pump
for a few seconds. This should clean the check valves. Recon-
nect to the strut and try again.

8
For more information, see our You-Tube Videos at
https://www.youtube.com/user/BogertAviation
Or search for Bogert Aviation.
Rev 3 08 19
BOGERT AVIATION INC.
3606 N Swallow Ave Ste 100
Pasco, WA 99301 USA
[phone] Phone
[phone] Toll Free
[phone] Fax
www.bogertaviation.com
[e-mail]
Climbing on Course
Since 1983