Hmmm. Not sure how it could engage without air pressure on the actuator. Do you have a hand-held vacuum pump? Harbor Freight sells them inexpensively. Not so sure applying a small amount of vac would do anything, but you know, the advice is free...

John B.

'87 Raider 2.6 Turbo Auto, Under Construction
'95 Montero SR, 35x12.5/15 BFG M/T KM-2's, Rock sliders, Qtr panel chop, gas tank lift, 2" BL, Aisins, 5.29s
'95 Pajero Mini
'98 Montero Winter Ed.
'04 Cadillac XLR
'03 Kawasaki ZRX1200R
'60 Ford Falcon 4Dr