AMP Research Power Step 77137-01A User manual

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INSTALLATION GUIDE
APPLICATION MODEL YR PART #
Toyota Tundra CrewMax 2007 - 2020 77137-01A
3-5 Hours
Professional installation recommended
5-Year Limited Warranty
WARRANTY
Invented, engineered and manufactured exclusively by AMP Research in the USA. May be covered by one of the following patents:
6,641,158; 6,830,257; 6,834,875; 6,938,909; 7,055,839; 7,380,807; 7,398,985; 7,584,975 ©2012 AMP Research. All rights reserved.
Printed in USA.
TOOLS REQUIRED
qMeasuring tape
q13 mm socket
q10 mm socket
qRatchet wrench and extension
q13mm end wrench
qWire stripper / cutter
q 3/16” hex key wrench (allen wrench)
q 5mm hex key wrench (allen wrench)
q4mm hex key wrench (allen wrench)
qElectrical tape
INSTALLATION TIME
12 3 4
SKILL LEVEL
4= Experienced
AMP RESEARCH TECH SUPPORT 1-888-983-2204 (Press 2) Monday - Friday, 7:00 AM - 5:00 PM PST

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AMP RESEARCH POWERSTEPTM – TOYOTA TUNDRA
A A
B B
2
2
1
1
WEIGHT:
jeep jk PSXL die cast linkage assembly
PROPRIETARY AND CONFIDENTIAL
THE INFORMATION CONTAINED IN
THIS DRAWING IS THE SOLE
PROPERTY OF <COMPANY NAME >.
ANY REPRODUCTION IN PART OR AS
A WHOLE WITHOUT THE WRITTEN
PERMISSION OF <COMPANY NAME>
IS PROHIBITED.
COMMENTS:
SHEET 1 OF 1
Q.A.
MFG APPR.
ENG APPR.
CHECKED
DRAWN
DATE
NAME
DIMENSIONS ARE IN INCHES
TOLERANCES:
FRACTIONAL
ANGULAR: MACH BEND
TWO PLACE DECIMAL
THREE PLACE DECIMAL
NEXT ASSY
USED ON
APPLICATION
DO NOT SCALE DRAWING
FINISH
MATERIAL
REV.
A
DWG. NO.
SIZE
SCALE:1:8
CAUTION: HANDLE WITH CARE.
To ensure our customers receive all components with full integrity, we pack the motors separate from their linkage
assemblies. This requires that the installer position and fasten the motor before continuing with the install. Please
follow the instructions below and handle the assembly carefully.
CAUTION: Dropping the assembly or any excessive impact MAY cause damage to the motor.
Instructions:
1. Position the gear cover in place as shown if not already in place.
2. Seat motor into position on the three mounting bosses. This may require an adjustment of the gear by moving
the swing arms.
3. After seating into place, fasten the motor with the three motor mount screws with 4mm Hex Head. Tighten
screws to 36 in-lbs (4N-m). Do not over torque.
EXPLODED VIEW
• Motor
• Hex Head Bolt

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AMP RESEARCH POWERSTEPTM – TOYOTA TUNDRA
3x2
Motor linkage assembly
4 x2
Idler linkage assembly
1x2
Running board assembly
D
B
(A) End cap left (x1)
(B) End cap right (x1)
(C) T-nut insert (x2)
(D) Socket cap screw (x2)
(E) End cap wedge right (x1)
(F) End cap wedge left (x1)
A
CE
F
Cut Dimension
2x2
Rail Assembly

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AMP RESEARCH POWERSTEPTM – TOYOTA TUNDRA
5
Wire harness
6
Controller STA
Socket Cap Screw
12 x8
8
Motor Cover
7x2
Motor
Cinch Fastener
x6
910 x20
Cable tie (11”)
14 x2
Cable tie (7”)
15 x20
11 x4
16
Posi-Tap™
x4
5/16-18
Carriage Bolt
13 x10
x2
M8 Head Hex Bolt
M8 Hex Bolt w
Conical washer
17 x4
M6 Flange Bolt

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AMP RESEARCH POWERSTEPTM – TOYOTA TUNDRA
Linkage mounting bracket,
FRONT # 4407
28 x2
Rail Support
Bracket # 4549
25 x2
26
Linkage mounting
bracket REAR # 4160
20
LED Lamp
x4
24
Butt Connector
x8
21
LED Light Bracket
x4
4160
4407
Upper Mount
Spacer
19 x4
5/16-18
Flange Nut
18 x10
4160L
27
Linkage mounting
bracket REAR # 4160L
22
Nut Plates
x4 23
Button Head
Bolts
x4

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AMP RESEARCH POWERSTEPTM – TOYOTA TUNDRA
Install Front linkage mounting bracket #28
(part# 4407 Front) using supplied Conical
Washer bolts #10. Use second set of mounting
holes from front. Do not tighten to allow for
adjustment. Take note of bracket orientation.
Driver side shown.
Install Rear linkage mounting bracket
#27 (part # 4160L Rear) using supplied
Conical Washer bolts #10. Use last set of
mounting holes. Do not tighten to allow
for adjustment. Take note of bracket
orientation.
Driver side shown.
Install Rail support bracket #25 (part #4549)
using supplied conical washer assembly
in middle mounting position on body. Use
supplied conical washer bolts #10. Do not
tighten to allow for adjustment.
1
3
1
4
2

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Install 5 Carriage Bolts #13 into rail. Align bolts with bracket and use supplied Flange nuts #18
to attach Rail to brackets. Do not tighten to allow for adjustment. Insert Threaded nut plate onto
rail pocket. Light brackets will need to go rearward of Front linkage bracket and forward of Rear
linkage bracket. Leave loose to allow for adjustment.
2
1
11
Slide rail into position as show. Torque bolts
from step 3-5 to 16ft-lbs. Next torque ange
nuts that attach rail to brackets to 16ft-lbs.
On Driver side mount Front drive linkage and
rear idler linkage. Thread supplied Conical
washer bolts #10 into linkages. Install provided
spacer #19 and M6 ange bolt #17 into upper
mount as shown on both Drive and Idler
linkages. Do not tighten.
Slide mounting T-nut into position. Center Board
in rail pocket. Tighten fasteners to 10ft-lb.
12
Using a 13 mm socket torque linkage bolts to
16ft-lbs. Next use a 10mm socket torque linkage
spacer bolt #19 to 8 ft-lbs. Once linkages are
tight cycle board to verify steps deploy under
own weight and clear rail endcaps.
23
22
21
6
5
8
4
5
5
7

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Install controller #6 under hood on driver side
fender apron. Secure to factory wiring loom
with 11” cable ties #14.
Remove power fuse. Connect wire harness to
controller and secure locking clip. Connect red
power lead to positive battery terminal and black
ground lead to grounding lug on fender apron.
Route longest leg of wire harness across re
wall to passenger side and under vehicle
outside of frame rail.
Route shorter leg of wire harness down driver
side fender well and under vehicle outside of
frame rail.
Remove driver and passenger front sill
plates and kick panels. Pull up carpet.
Locate rubber grommets under carpet
in forward oorboards. Cut a slit in
the rubber grommets and pass the
trigger wires up through grommets
under carpet on both the driver and
passenger side.
6
5
5
5
5
11
9 12
7 10
13
11
4
9

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Insert Tighten
Strip 3/8” Insert and
Tighten
Posi-Tap™ instructions
2007 - 2017 model years: Locate main electrical junction box located under dash to the left of
the steering column. Connect grey Power Step wire to 18 gage black or dark charcoal wire(Driver
Rear) in pin 2 of upper left conector shown.
2018 model years: Locate the 18 gage pink w/red stripe
wire (Driver Rear) in Pin 24.
Pin 2
Locate 20 pin connector at bottom of panel on left. Connect blue Power Step wire to 18 gage
blue wire (Driver Front) in pin 15 of connector shown. Plugs are located to the left of E Brake
Pedal.
Pin 15
Remove trim panel below
steering column
2007-2013 Model Years 2014 - 2018 Model Years
2007 - 2017
Model Years 2018 Model Year
14 15
16
17

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Partially separate the plastic rivet from the pin by
bending the pin back and forth. Slide motor cover
over motor and insert plastic push pin rivets in
mounting holes of motor cover. Drive pin ush with
rivet head. Use pliers to ease installation.
8
Insert plug from wire harness onto motor.
5
7
5
9
8 7
Slide rubber grommet on wire harness into slot of
motor cover. Install motor cover onto motor.
Pin 9
Pin 1
Locate the 22 pin connector at the bottom of the passenger side kick panel area. See pin connector
locations for corresponding model years.
(07-13 Model yrs) plug color Grey Pin 1(Passenger Rear) wire color will be Blue and pin 9 (Passenger Front) wire will be White.
(2014-17 Model yrs) plug color white Pin 3 (Passenger Rear) wire color will be Tan and pin 10 (Passenger Front) wire will be Green.
(2018 Model yrs) plug color white Pin 3 (Passenger Rear) wire color will be Tan and pin 22 (Passenger Front) wire will be Green.
Pin 3
Pin 10
2014-18 Model Years
2007-2013 Model Years
Pin 22
18
19 20
17
21