Chubb Manifoil Mk IV combination dial lock
last update: December 2004
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Page 1: ...Chubb Manifoil Mk IV combination dial lock last update December 2004 Shed Locks Shed Locks Manifoil Chubb Manifoil Mk IV combination dial lock...
Page 2: ...ion has four numbers and is always dialed in the same way five turns clockwise to the first number four anti clockwise to the second three clockwise to the third two anti clockwise to the fourth then...
Page 3: ...moving the dial about 1 4 of a turn Note the broad arrow marking typical for UK government issue The rear case is held on by two screws Normally these would be lock wired and sealed with a lead crimp...
Page 4: ...nsert the setting key through the rear cover and turn it 1 4 of a turn anti clockwise Enter the new combination 3 numbers again using the straight mark Turn the setting key back then remove it Always...
Page 5: ...Fourth number is 25 Don t use numbers between 20 35 for the third number Bolt at the top Fourth number is 75 Don t use numbers between 70 85 for the third number...
Page 6: ...s is driven by the dial but revolves backwards relative to it The disks carrying the combination are invisible beneath the outer disk The first number is on the most deeply hidden disk If the safe is...
Page 7: ...entered the notches in the disks line up and allow the comb to fall into the notch The final half turn rotates the outer disk so that the visible notch in it catches the large lever and pulls it down...
Page 8: ...Unlocked Several aspects of the mechanism are notably sophisticated There are even a pair of lead shields to prevent X ray examination Photo sequence of a disassembled lock...
