MULTIQUIP DCA400 Series User manual

DCA400 SERIES — FUEL RETURN LINE KIT INSTRUCTIONS P/N 35499 — REV. #0 (01/26/11) — PAGE 1
DCA400 Series Generator
Fuel Return Modification
The following instructions are intended to assist the user in the installation of the Fuel Return Line Kit for use on the
DCA400 Series generators affected by Service Bulletin GSP20110113. Please read all assembly instructions before
installing the kit.
REQUIRED TOOLS
13mm socket or wrench
Flat blade screwdriver
Pliers
Wire cutters
Pipe sealant
PARTS
Verify that all parts are accounted for. See Figure 1 and
Table 1.
Figure 1. Return Fuel Line Kit
10
2
3
5
5
5
5
5
7
8
1
6
INSTRUCTIONS
11
4
9
WORK SAFELY!
Only a qualified service technician with proper training
should perform this installation. Follow all shop safety rules
when performing this installation.
PREPARATION
1. Make sure generator is turned off and engine is cool.
2. Place the generator in an area free of dirt and debris
Make sure it is on secure level ground with chock blocks
underneath each wheel to prevent the generator from
rolling.
3. Disconnect negative battery cable from the battery.
4. Remove front cabinet panel to gain access to generator
fuel tank.
5. Remove trailer fuel tank cover to gain access to trailer
fuel tank.
Table 1. Return Fuel Line Kit
Item
No. Part No. Description QTY. Remarks
1 35500 Kit, Return Fuel Line 1 Includes
items 2-11
2Fitting, Bush 1/2FP x 3/4MP
Steel/Yel Zinc 1
3Fitting, Tee, 3/4FP x 3/4MP x
3/4FP 1
4 Fitting, 3/4MP x 1/2 Barb, Brass 1
5 Clamp, Hose Worm #8 1/2-1.00 5
6Hose, Fuel, 1/2" ID, Return
Extension, 53 in. (134.6 cm) 1
7 Fitting, Brass, 8 Barb x 8 Barb 1
8Hose, Fuel, 1/2" ID, Vent,
24 in. (61 cm) 1
9 Tie, Cable Ty-Rap Black 10
10 Protector, Spiral Hose 1
11 35499 Instructions, Return Fuel Line 1

DCA400 SERIES — FUEL RETURN LINE KIT INSTRUCTIONS P/N 35499 — REV. #0 (01/26/11) — PAGE 2
DISASSEMBLY
Figure 2 illustrates the unit’s current fuel line configuration.
Figure 2. Current Fuel Line Configuration
1. Turn fuel shut-off valve to the OFF position (Figure 3).
Figure 3. Fuel Shut-Off Valve (Off Position)
Generator
Fuel Tank
Drain
Trailer
Fuel Tank
Engine
Return
Hose
Pick-Up
Hose
NOTICE
Fuel leaks may occur when disconnecting hoses and
fittings. Wipe up any spilled fuel immediately.
Trailer
Fuel Tank
Drain
Fuel Shut-Off
Valve (OFF Position)
2. Disconnect pick-up hose from pick-up port and discard.
See Figure 4.
Figure 4. Remove/Discard Pick-Up Hose
3. Disconnect engine return hose from return port. See
Figure 5.
Figure 5. Disconnect Engine Return Hose
Remove/Discard
Pick-Up Hose
Pick-Up
Port
Disconnect
Engine Return
Hose
Return
Port

DCA400 SERIES — FUEL RETURN LINE KIT INSTRUCTIONS P/N 35499 — REV. #0 (01/26/11) — PAGE 3
4. Disconnect drain hose from trailer return port. See
Figure 6.
Figure 6. Disconnect Drain Hose
5. Remove fittings from trailer return port. Retain the 90º
fitting, and discard the others. See Figure 7.
Figure 7. Remove Trailer Return Port Fittings
Drain
Disconnect
Drain Hose
Trailer
Return
Port
Trailer
Return Port
Remove
Fittings
Retain
90º Fitting
INSTALL NEW TRAILER RETURN PORT FITTINGS
Refer to Figure 8.
Figure 8. New Trailer Return Port Fittings
1. Install Item 3, tee fitting, into trailer return port.
2. Install Item 2, straight fitting, into the right side of the
tee fitting.
3. Install existing 90º fitting into Item 2. Connect to drain
hose.
4. Install Item 4, straight fitting, into the left side of the tee.
Existing 90º
Fitting
Drain
Hose
2
4
3
NOTICE
Apply pipe sealant to all fittings.

DCA400 SERIES — FUEL RETURN LINE KIT INSTRUCTIONS P/N 35499 — REV. #0 (01/26/11) — PAGE 4
INSTALL NEW RETURN EXTENSION HOSE
Refer to Figure 9.
1. Connect Item 6, return extension hose, to item 4.
Secure with clamp, Item 5.
2. Install Item 7, straight fitting, between extension hose
and existing engine return hose. Secure with clamps.
Figure 9. New Return Extension Hose
3. Install spiral tubing, Item 10, around return extension
hose. Secure with cable ties, Item 9. See Figure 10.
5
5
5
7
6
Engine
Return Hose
4
Figure 10. Spiral Tubing
INSTALL NEW VENT HOSE
1. Connect Item 8, vent hose, to generator pick-up port and
return port. Secure with clamps, Item 5. See Figure 11.
Figure 11. Vent Hose
9
9
10
5
5
8
Pick-Up
Port
Return
Port

DCA400 SERIES — FUEL RETURN LINE KIT INSTRUCTIONS P/N 35499 — REV. #0 (01/26/11) — PAGE 5
2. Secure vent hose to engine return hose and engine
feed hose with cable ties, Item 9.
Figure 12. Secure Vent Hose
9
9
9
Engine
Feed
Hose
Engine
Return
Hose
REASSEMBLY/TESTING
1. Turn fuel shut-off valve to the ON position (Figure 3).
2. Reconnect negative battery cable to the battery.
3. Start generator as referenced in the Operation Manual.
4. Check for fuel leaks.
5. Replace front cabinet panel and trailer fuel tank cover.

Your Local Dealer is:
HERE’S HOW TO GET HELP
PLEASE HAVE THE MODEL AND SERIAL
NUMBER ON-HAND WHEN CALLING
United StateS
Multiquip Corporate Office MQ Parts Department
18910 Wilmington Ave.
Carson, CA 90746
Contact: [e-mail]
Tel. [phone]
Fax [phone]
800-427-1244
310-537-3700
Fax: [phone]
Fax: [phone]
Service Department Warranty Department
800-421-1244
310-537-3700
Fax: [phone]
310-537-3700
Fax: [phone]
Technical Assistance
800-478-1244 Fax: [phone]
mexico United Kingdom
MQ Cipsa Multiquip (UK) Limited Head Office
Carr. Fed. Mexico-Puebla KM 126.5
Momoxpan, Cholula, Puebla 72760 Mexico
Contact: [email protected]
Tel: [phone]
Fax: [phone]
Unit 2, Northpoint Industrial Estate,
Globe Lane,
Dukinfield, Cheshire SK16 4UJ
Contact: [e-mail]
Tel: [phone]
Fax: [phone]
Canada
Multiquip
4110 Industriel Boul.
Laval, Quebec, Canada H7L 6V3
Contact: [e-mail]
Tel: [phone]
Tel: [phone]
Fax: [phone]
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and
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of their respective owners and used with permission.
The information and specifications included in this publication were in effect at the time of approval for printing. Illustrations, descriptions, references and technical data contained in
this document are for guidance only and may not be considered as binding. Multiquip Inc. reserves the right to discontinue or change specifications, design or the information published
in this publication at any time without notice and without incurring any obligations.
DCA400 Series
Fuel Return Modification