Fatigue Technology Inc. 401 Andover Park East Seattle, WA • USA 98188-7605 Tel: (206)246-2010 Fax: (206)244-9886
57429 – Rev L 1
SECTION 1.0: INTRODUCTION
This instruction manual contains information on the operation and maintenance of the Little Brute (LB) Puller Unit.
To obtain optimum performance and many years of trouble-free service, operate the puller unit properly and
carefully follow maintenance procedures.
Read this manual before operating the puller unit and retain it for future reference.
1.1 ABOUT THE LITTLE BRUTE PULLER UNIT
The Little Brute hydraulic puller unit is a powerful, small, lightweight tool specifically designed for use with
Fatigue Technology Inc. (FTI) patented Split Sleeve Cold Expansion™ (SsCx™) process. The Little Brute
Puller Unit is designed to pull a mandrel through a hole with the pre-lubricated stainless steel split sleeves used
in this process.
The Little Brute puller has a maximum pull force of 8,000 pounds (35,584N) at 10,000 psi (68.95MPa) pump
pressure. The Little Brute is available in six sizes (models) for cold expanding holes up to 1/2 inch (12.7 mm) in
diameter and 3-1/2 inches (88.9 mm) deep in aluminum, and 3/8 inch (9.53 mm) in diameter and 3-1/2 inches
(88.9 mm) deep in steel and titanium.
The Little Brute is available in various models to accommodate multiple material stack-ups, hose options, and
mandrel adapters.
LB-xx where ‘-xx’ relates to material stack (see Figure 1.3-2)
LB-xx-V where ‘-V’ represents high visibility hoses
LB-xx-Hxx where ‘-Hxx’ represents a unique hose length other than the standard 10 feet
LB-xxA comes with a LB-CA-4 mandrel adapter
LB-xxB comes with a LB-CA-6 mandrel adapter
LB-xx-SH where ‘-SH’ represents short hose length of 4 inches
LB-15-20D4 is an LB-15 puller with an LB-20 front barrel
LB-xx-4K is designed for the reduced pressure PowerPak (FT-20-4K) with 4,000 maximum psi
The Little Brute has a fail-safe air control system that causes the puller retraction cycle to be interrupted
whenever the operator releases finger pressure on the trigger or in the event of air or hydraulic hose failure. All
puller units operate in conjunction with either of FTI’s PowerPak air-hydraulic power units: the standard
FT-200 or portable FT-20 (and compatible with older units IW100MF and IW10MF). The Little Brute has
proven to be very reliable and requires minimal maintenance.
1.2 GENERAL DESCRIPTION
NOTE: Specifications are the same for all Little Brute pullers LB-10 through LB-35.
Hydraulic Fluid Requirements ...................... U.S. MIL-SPEC #5606
Operating Hydraulic Pressure ....................... 10,000 psi (68.95MPa)
Pull Force Capacity ....................................... 8,000 pounds (35,584N)
PowerPak Air Line Requirements ................ 3/8 inch to 1/2 inch (9.53 to 12.70 mm) ID (FT-200)
PowerPak Air Flow Requirements ............... 90 to 120 psi (0.621 to 0.827MPa), 50 cfm (1.42m
3
/min) (FT-200)
Actuation ....................................................... Pneumatic
Operation ...................................................... Hydraulic
Compatible PowerPaks ................................. FT-200 or FT-20
Fail-Safe. ....................................................... Air logic safety circuit halts mandrel retraction when trigger is
released
Replacement Seal Kit .................................... LB Seal Kit (LB-SK)
To Next Page
Loading...
Need help?
General