AW Gear Meters JV-CG User Manual

1

2

3

4

5

6

7

8

9

MAINTENANCE GUIDE FOR THE JV-XXCG FLOW METER

Cleaning, inspecting or repairing a JV-CG Series gear flow meter is easily accomplished by

1. Remove the Sensor (1) from the flow meter body Upper Housing (4).
Using a 3mm hex key, loosen the 2 mounting screws inside the sensor.

2. The JV-30 size and smaller use M6 Bolts (2), loosen them using a 5mm
hex key. The JV-60 uses M10 Bolts (2), loosen them using an 8mm hex
key. Keep the 2 opposing bolts near the Locating Pins (7) engaged by a
few threads to avoid stress on the shafts and the locating pins during
housing separation. Please note the orientation of the Upper and

Lower housings with respect to each other so that the meter is
reassembled the same way.

3. Holding the Upper Housing (4), gently tap on the top of the 2 opposing
bolt heads to separate the Upper Housing (4) from the Lower Housing
(9). Do NOT use chisels or screwdrivers to split and pry apart the

housings. This can cause damage to the meter bodies and meter
internal parts.

4. After separation, remove, clean and inspect the gears (6) and shafts (5).
Clean out the o-ring groove, shaft holes and meter cavity.

5. After cleaning all parts completely, the Gears (6), Shafts (5) and
Locating Pins (7) can be reinserted. Check for free and easy rotation of
the gears.

6. Replace the O-Ring (8). PTFE o-rings should always be replaced.
FKM o-rings can be reused if they are not damaged.

Note: JVM-60CG Flow meters have 2 o-rings per meter.

7. During reassembly keep the meter housings as parallel as possible.
Make sure the housings are orientated the same way they were prior to
disassembly.

8. Replace the Washers (3) and the Bolts (2). Torque the bolts to 15Nm
for the12, 20 and 30 size meters and 30Nm for the 60 size meters. Do
not force the meter housings together. Do NOT use a hammer or other
such device. Over tightening will not cause damage to the meter, but
may fatigue the bolts and/or restrict the operation if internal surfaces are
not completely clean.

9. After reassembly, gently blow air through the meter so the gears spin.
This should be clearly audible given a moderate background noise level.

10. Clean any debris from the pickup holes before remounting the sensor (1)

to the Upper Housing (4). Use a 3mm hex key to tighten the mounting
screws in the sensor to mount the sensor on the housing. Note that

there is a correct and incorrect orientation for the sensor to be
mounted on the flow meter. Please see the AW Gear Meters website

for documentation if you do not have it. The orientation is noted by the

sensor’s connector with respect to the outlet port of the flow meter.

following the procedures below.

JV-20CG w/ DH-B Shown

AW Gear Meters Franksville, WI  web: www.awgearmeters.com

 Tel: [phone]  Fax: [phone]  Email: [e-mail]

REV. 05/24/12 JVXX-CG W-DHB.DOC

CROSS REFERENCE GUIDE

AG60030

LP-60CG Locating Pin

AG01020 AG10020 AG15020 AG20020 AG30020 AG60020

ST-01CG Shaft ST-10CG Shaft ST-15CG Shaft ST-20CG Shaft ST-30CG Shaft ST-60CG Shaft

AG01010 AG10010 AG15010 AG20010 AG30010 AG60010
GR-01CG GR-10CG GR-15CG GR-20CG GR-30CG GR-60CG
AG01040 AG10040 AG60080 - 2 pcs

COT-01CG COT-10CG COT-60KG

AG01045 AG10045 AG60085 - 2 pcs

COV-01CG COV-10CG COV-60KG

AG60050 - 12 pcs

M10x70mm

AG60055 - 12 pcs

Washer - M10 Hardened Washer

Table Format: AG15030 AW Part #

LP-CG Locating Pin AW Part Description

JVM-20CG

JVM-30CG

JVM-60CG

Part - Qty. per meter
[Drawing Ref. #]

JVM-01CG

JVM-10CG

JVM-15CG

LP-CG Locating Pin

AG15060 - 6 pcs

SC-M6x1-30mm

AG15040

COT-15CG

AG15045

COV-15CG

AG15065

Washer - M6 Hardened Washer

FKM O-Ring - 1
[8]

Bolts - 6
[2]

Washers - 6
[3]

Locating Pin - 2
[7]

Shaft - 2
[5]

Gear w/ Insert - 2
[6]

PTFE O-Ring - 1
[8]

AG15030

FOR JV-XXCG SERIES SPARE PARTS

AW Flow Meters Franksville, WI  web: www.awflowmeters.com

 Tel: [phone]  Fax: [phone]  Email: [e-mail]

REV. 05/24/12 JVXX-CG W-DHB.DOC