Mityvac MV5545 User Manual download pdf (Page 8)

Assembly

For flexibility and ease of storage, the FST Pro features a modular

design that is quick to assemble and breakdown. Proper assembly

for testing is covered in the Setup and Installation instructions

Bypass Hose

Prior to the first use of the FST, the 1/4" (6.5 mm) ID clear bypass

hose should be assembled to the bypass port extending from the

side of the flowmeter, above the flow control valve. To connect the

fuel bypass hose:

1. Unscrew the compression nut from the fuel bypass port extending

from the side of the flowmeter just above the flow control valve

(

Fig. 1).

2. Slip the compression nut over one end of the clear bypass hose,

1/4" (6.5 mm) ID x 6’ (1.8 m) long (Fig. 2).

3. Push the end of the bypass hose over the barb extending from

the bypass port (Fig. 3).

4. Slide the compression nut up over the end of the tube and

thread it back onto the bypass port. Tighten the nut using a

7/16" open-end wrench (Fig. 4).

Flowmeter Faceplates

The flowmeter is shipped with faceplates installed on the front and

back. The flow scale unit of measure printed on both plates is

gallons per minute (GPM). Included with the kit are faceplates with a

liters/minute (LPM) flow scale. Faceplates printed with a gallons per

hour (GPH) flow rate scale can be purchased separately.

The faceplates are held securely by the lip of the rubber boot that

surrounds the flowmeter. For accuracy, they pilot on the caps that

seal the top and bottom of the flowtube.

To remove the faceplates, simply peel back the edges of the rubber

boot. To install new faceplates, match the replacement faceplate to

the correct side of the flowmeter, position the cutout over the flow-

tube, and then carefully work the lip of the rubber boot back over

the edge.

Connections

The hoses that route fuel from the vehicle’s fuel delivery system

into and out of the FST Pro, utilize a special female quick-connect

fitting (Fig. 5). This fitting was selected for several important reasons:

1. It conforms to the SAE J2044 specification for fuel fittings

2. It is a common fuel delivery system connection on which many

manufacturers are standardizing

3. It does not restrict fuel flow, which could cause a

false diagnosis

4. The connection releases with a simple push-button action. No

special tools are required to disconnect the fittings.

The flowmeter inlet and outlet ports, as well as the adapters and

fittings that connect the FST into the fuel delivery system, have the

complimenting male SAE J2044 endform (Fig. 6).

To secure the male to female connection, simply push the male

endform into the female quick-connect until it snaps securely into

place (Fig. 7). Always test the connection by trying to pull

it apart without pressing the release button.

Fig. 3

Fig. 1

Fig. 6

Fig. 5

Fig. 4

Fig. 2

Page Number - 8 Form 824127

Fig. 7

1 2 3 4 5 6 7 8 9 10 11 12 13 ... 41 42

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Mityvac MV5545 User Manual Page 8

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