Luverne Regal 7 477078 User manual

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INSTALLATION INSTRUCTIONS AND PARTS LIST
APPLICATION:
MODEL 401117 WHEEL TO WHEEL STEP BRACKETS:
1999 GM SILVERIDO& SIERRA REGULAR/EXTENDED/CREW CAB PICKUPS
1. READ INSTRUCTIONS COMPLETELY AND CHECK TO MAKE SURE THAT ALL REQUIRED PARTS
(LISTED ON THE SER
VICE PARTS LIST) ARE ON HAND BEFORE STARTING THE INSTALLATION.
2. ASSEMBLE THE LOAD REACTION STUDS AND HARDWARE (ITEM#8 THRU #11) AS FOLLOWS:
2.1 ON THE SHORT THREADED END OF THE LOAD REACTION STUD (ITEM #11), INSTALL A
BLACK 3/8” SERRATED FLANGE NUT (ITEM #10) BACKWARDS TO THE BOTTOM OF THE
THREAD. THEN, INSTALL A BLACK 3/8” FLAT WASHER (ITEM #9) AND RUBBER “CUSHION”
WASHER (ITEM #8) TIGHT UP AGAINST THE SERRATED FLANGE NUT. (THE END OF THE STUD
MUST BE RECESSED IN THE RUBBER WASHER, APPOX 3/16”).
2.2 ON THE LONG THREADED END OF THE STUD, INSTALL A BLACK 3/8” SERRATED FLANGE NUT
(ITEM #10) BACKWARDS TO NEAR TO THE BOTTOM OF THE THREADS.
3. ATTACH THE LOAD REACTION STUD ASSEMBLIES TO THE BODY MOUNTING BRACKETS AS
SHOWN.
NOTE: IF YOU ARE MOUNTING THE STEPS ON A 1500 MODEL PICKUP, YOU MUST ATTACH
BRACKET (ITEM #14) TO BRACKETS (ITEM #1 &2) (SEE FIG 1) IN ORDER TO USE THE LOAD
REACTION STUD.
3.1. INSERT THE STUD, FROM THE INBOARD SIDE OF THE BRACKET THRU THE LOWEST HOLE IN
THE BENT FLANGE THAT WILL ALLOW THE RUBBER WASHER TO SET FIRM AGAINST THE
SIDE WALL OF THE FRAME. INSTALL A BLACK FLANGE NUT (ITEM #10) ON THE OUTBOARD
END OF THE STUD (FINGER TIGHT ONLY).
NOTE:
DUE TO EXCESSIVE THREAD LOCKER IN THE BODY MOUNT BOLT AREA ON THE 2010+ GM
SILVERADO/SIERRA, USE CAUTION WHEN REMOVING THE BODY MOUNT BOLTS TO REDUCE
THE RISK OF CAUSING DAMAGE TO THE THREADED INSERTS INSIDE THE VEHICLE.
4. REMOVE THE FACTORY FRONT, CENTER, AND REAR BODY MOUNT BOLTS (ONE SIDE OF THE
VEHICLE AT A TIME) AND INSTALL THE MOUNTING BRACKETS PER THE FOLLOWING
INSTRUCTIONS.
4.1. INSTALL THE FRONT MTG BRKT (ITEM #1 & #2) TO THE FRONT CAB MOUNT AS SHOWN
(LEAVE THESE FASTENERS FINGER TIGHT).
4.2. INSTALL THE CENTER MTG BRKT (ITEM #3 & #4) TO THE CENTER CAB MOUNT AS SHOWN
(LEAVE THESE FASTENERS FINGER TIGHT).
4.3. INSTALL THE REAR INBOARD MTG BRKT (ITEM #7) & WASHER (ITEM #13) TO THE REAR CAB
MOUNT AS SHOWN (LEAVE THESE FASTENERS FINGER TIGHT) (EXTENDED AND CREW CAB
ONLY).
REV C 30MAR18
REV B 05MAR12
REV A 13OCT10
551874 SHEET 1 OF 4 27JUL10

INSTALLATION INSTRUCTIONS AND PARTS LIST
APPLICATION:
MODEL 401117 WHEEL TO WHEEL STEP BRACKETS:
1999 GM SILVERIDO& SIERRA REGULAR/EXTENDED/CREW CAB PICKUPS
EXTENDED CAB ONLY
4.3.1. ATTACH THE REAR OUTBOARD CAB MTG BRKT (ITEM #5 &#6) TO THE REAR INBOARD
CAB MTG BRKT (ITEM #7), WITH THE 3/8” BLACK ZINC PLATED BOLTS (ITEM #12),
WASHERS (ITEM #9) AND SERRATED FLANGE NUTS (ITEM #10). THE REAR OUTBOARD
CAB MTG BRKT MUST BE MOUNTED TO THE BACK SIDE OF THE REAR INBOARD CAB
MTG BRKT (TOWARDS THE REAR OF THE BEHICLE) AS SHOWN. BE SURE TO USE THE
BOTTOM SINGLE HOLE AND TOP DOUBLE HOLES IN THE REAR INBOARD CAB MTG
BRKT (SEE FIG 1). PUT THE BOTS THROUGH THE FRONT SIDE OF THE BRACKET SO THE
SERRATED FLANGE NUTS ARE ON THE BACK SIDE TO ALLOW CLEARANCE FOR THE
FRAME OF THE TRUCK. TORQUE THE BOLTS TO 19 LB. FT.
CREW CAB ONLY
4.3.2. ATTACH THE REAR OUTBOARD CAB MTG BRKT (ITEM #5 &#6) TO THE REAR INBOARD
CAB MTG BRKT (ITEM #7), WITH THE 3/8” BLACK ZINC PLATED BOLTS (ITEM #12),
WASHERS (ITEM #9) AND SERRATED FLANGE NUTS (ITEM #10). THE REAR OUTBOARD
CAB MTG BRKT MUST BE MOUNTED TO THE BACK SIDE OF THE REAR INBOARD CAB
MTG BRKT (TOWARDS THE REAR OF THE BEHICLE) AS SHOWN. BE SURE TO USE THE
BOTTOM SINGLE HOLE AND BOTTOM DOUBLE HOLES IN THE REAR INBOARD CAB MTG
BRKT (SEE FIG 1). PUT THE BOTS THROUGH THE FRONT SIDE OF THE BRACKET SO THE
SERRATED FLANGE NUTS ARE ON THE BACK SIDE TO ALLOW CLEARANCE FOR THE
FRAME OF THE TRUCK. TORQUE THE BOLTS TO 19 LB. FT.
5. ATTACH THE SPRING HANGER MOUNTING BRACKETS (ITEM #22& #23) AGAINST THE SIDE OF
THE VEHICLE SPRING HANGER AS SHOWN.
5.1. LOOSEN THE SPRING HANGER BOLT JUST ENOUGH SO THAT THE INBOARD SPRING HANGER
MTG BRKT (ITEM #23) CAN BE SLID UP BEHIND THE FLANGE OF THE BOLT. POSITION THE
INBOARD SPRING HANGER MTG BRKT BEHIND THE FLANGE OF THE SPRING HANGER BOLT,
WITH THE CHANNEL OPEN TO THE OUTBOARD SIDE, AS SHOWN.
5.2. INSTALL THE OUTBOARD SPRING HANGER MTG BRKT (ITEM #22) SO THAT THE INBOARD
VERTICAL PORTION OF THE BRACKET FITS INSIDE THE CHANNEL SHAPE OF THE INBOARD
SPRING HANGER MTG BRKT USING THE 3/8” ZINC PLATED BOLT (ITEM #20), 3/8” WASHER
(ITEM #21), 1/2” WASHER (ITEM# 18), AND 3/8” ZINC PLATED NYLOCK NUT (ITEMS #19) AS
SHOWN. DO NOT TIGHTEN THESE BOLTS UNTILL THE BRACKET IS ATTACHED TO THE STEP
ASSEMBLY.
6. ATTACHING THE STEP ASSEMBLY:
PLEASE REVIEW THE INSTALLATION INSTRUCTIONS THAT ARE INCLUDED IN YOUR STEP
ASSEMBLY FORSPECFIC DETAILS.
TIGHTEN THE BODY MOUNT BOLTS PER MANUFACTURERS SPECS.
TIGHTEN THE SPRING HANGER BOLT PER MANUFACTURERS SPECS.
REV C 30MAR18
REV B 05MAR12
REV A 13OCT10
551874 SHEET 2 OF 4 27JUL10

INSTALLATION INSTRUCTIONS AND PARTS LIST
APPLICATION:
MODEL 401117 WHEEL TO WHEEL STEP BRACKETS:
1999 GM SILVERIDO& SIERRA REGULAR/EXTENDED/CREW CAB PICKUPS
SERVICE PARTS LIST
ITEM PART NO. QTY DESCRIPTION
PARTS INCLUDED IN BRACKET PACKAGE
1 551868 1 BRACKET-MTG, CAB, FRONT, LH, 401117
2 551869 1 BRACKET-MTG, CAB, FRONT, RH, 401117
3 551870 1 BRACKET-MTG, CAB, CENTER, LH, 401117
4 551871 1 BRACKET-MTG, CAB, CENTER, RH, 401117
5 551890 1 BRACKET-MTG, CAB, REAR, OUTBOARD, LH, 401117
6 551891 1 BRACKET-MTG, CAB, REAR, OUTBOARD, RH, 401117
7 551907 2 BRACKET-MTG, CAB, REAR, INBOARD, LH/HR, 401117
8 102592 6 WSHR, RUBBER, .354 ID X 1.00 OD X .75 THK
9 106962 12 WSHR, FL, 3/8” .438 ID X 1.00 OD X .083 THK, BZP
10 106995 24 NUT, SERR FLG, HEX, 3/8-16X1.00 BZP
11 106960 6 STUD, -DBL ENDED, STL, 3/8-16 X 4.50”, BZP
12 106963 6 BOLT, 3/8-16X1.00, BZP
13 108882 2 WSHR, FL, .59 ID X 1.06 OD X .19 THK, ZP
14 551571 2 BRKT, 90 DEGREE, 3 HOLES
15 106997 2 SCREW, HHC, 5/16-18X1.00, BZP
16 106996 2 NUT-SERR FLG, 5/16-18, BZP
17 106998 2 WSHR-FL, SST, 5/16”, BZP
18 100118 4 WASHER-FL, 1/2", ZP
19 102381 2 NUT-NYLOCK, HEX, 3/8-16, ZP
20 101326 2 BOLT, HEX HEAD, 3/8-16X2.00, ZP
21 100062 4 WASHER-FL, 3/8”, ZP
22 551892 2 BRACKET-MTG, SPRING HANGER, OUTBOARD, 401117
23 551806 2 BRACKET-MTG, SPRING HANGER, INBOARD, 401117
CURT Group Recommendation: CURT Group recommends regular inspection and maintenance of the leaf spring
attachment point per GM Technical Service Bulletin 09-03-09-001E: Clunking Noise from Rear of Vehicle (Re-torque
Leaf Spring Bolts) - 2007-2017 Chevrolet GMC Trucks. Failure to regularly inspect and maintain factory-
recommended torque values may result in damage to the vehicle.
REV C 30 MAR18
REV B 05MAR12
REV A 13OCT10
551874 SHEET 3 OF 4 27JUL10