Hadley 857 User manual

ECR4873RevB
H13748.doc
Installation Instructions
MODEL857
Forvehicleswithairbrakes
1. Hornshouldbemountedontopofcabandtiltedslightlydownwardfor
bestsoundprojection.
2. Ifcabisequippedwithrooftrimpanel,removetoinstallhorn.
3. Drill1/2”and9/32”holes(usinggasketforatemplate)inpositiondesired
forhornbase.Locatepositionforfrontsupportanddrill9/32”holes.
4. Placegasketbetweenbaseofhornandtopofcabroofandsecuretoroof
with2screws,2lockwashers,and2nuts.
5. Placegasketbetweenbaseofsupportandtopofcabroofandsecureto
roofwith2screws,2lockwashers,and2nuts.
6. Assemblelanyardvalveandcurvedtensionwashertohorn.
7. Connecttubingfromairsupplytoinletonmanuallanyardvalve.
8. Punchholeintrimpanelforvalvelanyard.Lacelanyardthroughpanel.
Replacepanel,fastenlanyardtoconvenienttrimscrew.(notincluded)
CAUTION: check local noise abatement ordinances to avoid legal violations.
Important–Usepipecompoundonpipe
threadstoassureairtightconnections

All Hadley products carry a limited warranty for 12 months from the date of purchase. We will repair or
replace, at our option, defects in material and workmanship during that period when product is returned to
our service department at the address below.
Hadley
Attn: Warranty Dept
2851 Prairie Street
Grandville MI, 49418
Service Department: [phone]
Hadley Main: [phone]
Fax: [phone]
www.hadley-products.com

TO AIR SUPPLY
ROOF LINER
LANYARD
13 H11181 MALE CONNECTOR 1
12 H12463 PLASTIC SLEEVE 2
11 H11081 TUBE NUT 1
10 H12462 BRASS INSERT 2
9 H13110-1 TUBING 1
8 H11305 HEX NUT 4
7 H11306 LOCK WASHER 4
6 H00755-1 LANYARD VALVE ASSY 1
5 H11553 TENSION WASHER 1
4 H13727 MOUNTING PAD 1
3 H13724 SUPPORT PAD 1
2 H12801 CAP SCREW 4
1 H00855-0 HORN 1
ITEM PART NO DESCRIPTION QTY
6
5
4
8
7
2
3
9
10
11
12
13
SUPPORT
MODEL H00857
DRILL ONE 1/2" HOLE AND TWO 9/32"
1
HOLES FOR MOUNTNG HORN
DRILL TWO 9/32" HOLES FOR
MOUNTING SUPPORT
H13748.dwg
CAB ROOF